20 files changed, 214 insertions, 58 deletions

diff --git a/src/WixToolset.Mba.Core/BootstrapperApplication.cs b/src/WixToolset.Mba.Core/BootstrapperApplication.cs
index 1812c80b..b6c0dd0d 100644
--- a/src/WixToolset.Mba.Core/BootstrapperApplication.cs
+++ b/src/WixToolset.Mba.Core/BootstrapperApplication.cs
@@ -226,6 +226,9 @@ namespace WixToolset.Mba.Core
         /// <inheritdoc/>
         public event EventHandler<SystemRestorePointCompleteEventArgs> SystemRestorePointComplete;
 
+        /// <inheritdoc/>
+        public event EventHandler<PlanForwardCompatibleBundleEventArgs> PlanForwardCompatibleBundle;
+
         /// <summary>
         /// Entry point that is called when the bootstrapper application is ready to run.
         /// </summary>
@@ -1083,6 +1086,18 @@ namespace WixToolset.Mba.Core
             }
         }
 
+        /// <summary>
+        /// Called by the engine, raises the <see cref="PlanForwardCompatibleBundle"/> event.
+        /// </summary>
+        protected virtual void OnPlanForwardCompatibleBundle(PlanForwardCompatibleBundleEventArgs args)
+        {
+            EventHandler<PlanForwardCompatibleBundleEventArgs> handler = this.PlanForwardCompatibleBundle;
+            if (null != handler)
+            {
+                handler(this, args);
+            }
+        }
+
         #region IBootstrapperApplication Members
 
         int IBootstrapperApplication.OnStartup()
@@ -1120,13 +1135,12 @@ namespace WixToolset.Mba.Core
             return args.HResult;
         }
 
-        int IBootstrapperApplication.OnDetectForwardCompatibleBundle(string wzBundleId, RelationType relationType, string wzBundleTag, bool fPerMachine, string wzVersion, ref bool fCancel, ref bool fIgnoreBundle)
+        int IBootstrapperApplication.OnDetectForwardCompatibleBundle(string wzBundleId, RelationType relationType, string wzBundleTag, bool fPerMachine, string wzVersion, bool fMissingFromCache, ref bool fCancel)
         {
-            DetectForwardCompatibleBundleEventArgs args = new DetectForwardCompatibleBundleEventArgs(wzBundleId, relationType, wzBundleTag, fPerMachine, wzVersion, fCancel, fIgnoreBundle);
+            DetectForwardCompatibleBundleEventArgs args = new DetectForwardCompatibleBundleEventArgs(wzBundleId, relationType, wzBundleTag, fPerMachine, wzVersion, fMissingFromCache, fCancel);
             this.OnDetectForwardCompatibleBundle(args);
 
             fCancel = args.Cancel;
-            fIgnoreBundle = args.IgnoreBundle;
             return args.HResult;
         }
 
@@ -1159,9 +1173,9 @@ namespace WixToolset.Mba.Core
             return args.HResult;
         }
 
-        int IBootstrapperApplication.OnDetectRelatedBundle(string wzProductCode, RelationType relationType, string wzBundleTag, bool fPerMachine, string wzVersion, RelatedOperation operation, ref bool fCancel)
+        int IBootstrapperApplication.OnDetectRelatedBundle(string wzProductCode, RelationType relationType, string wzBundleTag, bool fPerMachine, string wzVersion, RelatedOperation operation, bool fMissingFromCache, ref bool fCancel)
         {
-            DetectRelatedBundleEventArgs args = new DetectRelatedBundleEventArgs(wzProductCode, relationType, wzBundleTag, fPerMachine, wzVersion, operation, fCancel);
+            DetectRelatedBundleEventArgs args = new DetectRelatedBundleEventArgs(wzProductCode, relationType, wzBundleTag, fPerMachine, wzVersion, operation, fMissingFromCache, fCancel);
             this.OnDetectRelatedBundle(args);
 
             fCancel = args.Cancel;
@@ -1656,6 +1670,16 @@ namespace WixToolset.Mba.Core
             return args.HResult;
         }
 
+        int IBootstrapperApplication.OnPlanForwardCompatibleBundle(string wzBundleId, RelationType relationType, string wzBundleTag, bool fPerMachine, string wzVersion, bool fRecommendedIgnoreBundle, ref bool fCancel, ref bool fIgnoreBundle)
+        {
+            PlanForwardCompatibleBundleEventArgs args = new PlanForwardCompatibleBundleEventArgs(wzBundleId, relationType, wzBundleTag, fPerMachine, wzVersion, fRecommendedIgnoreBundle, fCancel, fIgnoreBundle);
+            this.OnPlanForwardCompatibleBundle(args);
+
+            fCancel = args.Cancel;
+            fIgnoreBundle = args.IgnoreBundle;
+            return args.HResult;
+        }
+
         int IBootstrapperApplication.BAProc(int message, IntPtr pvArgs, IntPtr pvResults, IntPtr pvContext)
         {
             switch (message)
diff --git a/src/WixToolset.Mba.Core/EventArgs.cs b/src/WixToolset.Mba.Core/EventArgs.cs
index 56705769..7e7cbd11 100644
--- a/src/WixToolset.Mba.Core/EventArgs.cs
+++ b/src/WixToolset.Mba.Core/EventArgs.cs
@@ -226,22 +226,13 @@ namespace WixToolset.Mba.Core
     }
 
     /// <summary>
-    /// Additional arguments used when detected a forward compatible bundle.
+    /// Event arguments for <see cref="IDefaultBootstrapperApplication.DetectForwardCompatibleBundle"/>
     /// </summary>
     [Serializable]
     public class DetectForwardCompatibleBundleEventArgs : CancellableHResultEventArgs
     {
-        /// <summary>
-        /// Creates a new instance of the <see cref="DetectUpdateBeginEventArgs"/> class.
-        /// </summary>
-        /// <param name="bundleId">The identity of the forward compatible bundle.</param>
-        /// <param name="relationType">Relationship type for this forward compatible bundle.</param>
-        /// <param name="bundleTag">The tag of the forward compatible bundle.</param>
-        /// <param name="perMachine">Whether the detected forward compatible bundle is per machine.</param>
-        /// <param name="version">The version of the forward compatible bundle detected.</param>
-        /// <param name="cancelRecommendation">The cancel recommendation from the engine.</param>
-        /// <param name="ignoreBundleRecommendation">The ignore recommendation from the engine.</param>
-        public DetectForwardCompatibleBundleEventArgs(string bundleId, RelationType relationType, string bundleTag, bool perMachine, string version, bool cancelRecommendation, bool ignoreBundleRecommendation)
+        /// <summary />
+        public DetectForwardCompatibleBundleEventArgs(string bundleId, RelationType relationType, string bundleTag, bool perMachine, string version, bool missingFromCache, bool cancelRecommendation)
             : base(cancelRecommendation)
         {
             this.BundleId = bundleId;
@@ -249,7 +240,7 @@ namespace WixToolset.Mba.Core
             this.BundleTag = bundleTag;
             this.PerMachine = perMachine;
             this.Version = version;
-            this.IgnoreBundle = ignoreBundleRecommendation;
+            this.MissingFromCache = missingFromCache;
         }
 
         /// <summary>
@@ -278,9 +269,9 @@ namespace WixToolset.Mba.Core
         public string Version { get; private set; }
 
         /// <summary>
-        /// Instructs the engine whether to use the forward compatible bundle.
+        /// Whether the forward compatible bundle is missing from the package cache.
         /// </summary>
-        public bool IgnoreBundle { get; set; }
+        public bool MissingFromCache { get; set; }
     }
 
     /// <summary>
@@ -408,22 +399,13 @@ namespace WixToolset.Mba.Core
     }
 
     /// <summary>
-    /// Additional arguments used when a related bundle has been detected for a bundle.
+    /// Event arguments for <see cref="IDefaultBootstrapperApplication.DetectRelatedBundle"/>
     /// </summary>
     [Serializable]
     public class DetectRelatedBundleEventArgs : CancellableHResultEventArgs
     {
-        /// <summary>
-        /// Creates a new instance of the <see cref="DetectRelatedBundleEventArgs"/> class.
-        /// </summary>
-        /// <param name="productCode">The identity of the related package bundle.</param>
-        /// <param name="relationType">Relationship type for this related bundle.</param>
-        /// <param name="bundleTag">The tag of the related package bundle.</param>
-        /// <param name="perMachine">Whether the detected bundle is per machine.</param>
-        /// <param name="version">The version of the related bundle detected.</param>
-        /// <param name="operation">The operation that will be taken on the detected bundle.</param>
-        /// <param name="cancelRecommendation">The recommendation from the engine.</param>
-        public DetectRelatedBundleEventArgs(string productCode, RelationType relationType, string bundleTag, bool perMachine, string version, RelatedOperation operation, bool cancelRecommendation)
+        /// <summary />
+        public DetectRelatedBundleEventArgs(string productCode, RelationType relationType, string bundleTag, bool perMachine, string version, RelatedOperation operation, bool missingFromCache, bool cancelRecommendation)
             : base(cancelRecommendation)
         {
             this.ProductCode = productCode;
@@ -432,6 +414,7 @@ namespace WixToolset.Mba.Core
             this.PerMachine = perMachine;
             this.Version = version;
             this.Operation = operation;
+            this.MissingFromCache = missingFromCache;
         }
 
         /// <summary>
@@ -463,6 +446,11 @@ namespace WixToolset.Mba.Core
         /// Gets the operation that will be taken on the detected bundle.
         /// </summary>
         public RelatedOperation Operation { get; private set; }
+
+        /// <summary>
+        /// Whether the related bundle is missing from the package cache.
+        /// </summary>
+        public bool MissingFromCache { get; set; }
     }
 
     /// <summary>
@@ -1010,6 +998,61 @@ namespace WixToolset.Mba.Core
     }
 
     /// <summary>
+    /// Event arguments for <see cref="IDefaultBootstrapperApplication.PlanForwardCompatibleBundle"/>
+    /// </summary>
+    [Serializable]
+    public class PlanForwardCompatibleBundleEventArgs : CancellableHResultEventArgs
+    {
+        /// <summary />
+        public PlanForwardCompatibleBundleEventArgs(string bundleId, RelationType relationType, string bundleTag, bool perMachine, string version, bool recommendedIgnoreBundle, bool cancelRecommendation, bool ignoreBundle)
+            : base(cancelRecommendation)
+        {
+            this.BundleId = bundleId;
+            this.RelationType = relationType;
+            this.BundleTag = bundleTag;
+            this.PerMachine = perMachine;
+            this.Version = version;
+            this.RecommendedIgnoreBundle = recommendedIgnoreBundle;
+            this.IgnoreBundle = ignoreBundle;
+        }
+
+        /// <summary>
+        /// Gets the identity of the forward compatible bundle detected.
+        /// </summary>
+        public string BundleId { get; private set; }
+
+        /// <summary>
+        /// Gets the relationship type of the forward compatible bundle.
+        /// </summary>
+        public RelationType RelationType { get; private set; }
+
+        /// <summary>
+        /// Gets the tag of the forward compatible bundle.
+        /// </summary>
+        public string BundleTag { get; private set; }
+
+        /// <summary>
+        /// Gets whether the forward compatible bundle is per machine.
+        /// </summary>
+        public bool PerMachine { get; private set; }
+
+        /// <summary>
+        /// Gets the version of the forward compatible bundle.
+        /// </summary>
+        public string Version { get; private set; }
+
+        /// <summary>
+        /// Gets the recommendation of whether the engine should use the forward compatible bundle.
+        /// </summary>
+        public bool RecommendedIgnoreBundle { get; set; }
+
+        /// <summary>
+        /// Gets or sets whether the engine will use the forward compatible bundle.
+        /// </summary>
+        public bool IgnoreBundle { get; set; }
+    }
+
+    /// <summary>
     /// Additional arguments used when the engine has begun installing the bundle.
     /// </summary>
     [Serializable]
diff --git a/src/WixToolset.Mba.Core/IBootstrapperApplication.cs b/src/WixToolset.Mba.Core/IBootstrapperApplication.cs
index 4812c038..14cb8fd5 100644
--- a/src/WixToolset.Mba.Core/IBootstrapperApplication.cs
+++ b/src/WixToolset.Mba.Core/IBootstrapperApplication.cs
@@ -64,8 +64,8 @@ namespace WixToolset.Mba.Core
         /// <param name="wzBundleTag"></param>
         /// <param name="fPerMachine"></param>
         /// <param name="wzVersion"></param>
+        /// <param name="fMissingFromCache"></param>
         /// <param name="fCancel"></param>
-        /// <param name="fIgnoreBundle"></param>
         /// <returns></returns>
         [PreserveSig]
         [return: MarshalAs(UnmanagedType.I4)]
@@ -75,8 +75,8 @@ namespace WixToolset.Mba.Core
             [MarshalAs(UnmanagedType.LPWStr)] string wzBundleTag,
             [MarshalAs(UnmanagedType.Bool)] bool fPerMachine,
             [MarshalAs(UnmanagedType.LPWStr)] string wzVersion,
-            [MarshalAs(UnmanagedType.Bool)] ref bool fCancel,
-            [MarshalAs(UnmanagedType.Bool)] ref bool fIgnoreBundle
+            [MarshalAs(UnmanagedType.Bool)] bool fMissingFromCache,
+            [MarshalAs(UnmanagedType.Bool)] ref bool fCancel
             );
 
         /// <summary>
@@ -143,6 +143,7 @@ namespace WixToolset.Mba.Core
         /// <param name="fPerMachine"></param>
         /// <param name="wzVersion"></param>
         /// <param name="operation"></param>
+        /// <param name="fMissingFromCache"></param>
         /// <param name="fCancel"></param>
         /// <returns></returns>
         [PreserveSig]
@@ -154,6 +155,7 @@ namespace WixToolset.Mba.Core
             [MarshalAs(UnmanagedType.Bool)] bool fPerMachine,
             [MarshalAs(UnmanagedType.LPWStr)] string wzVersion,
             [MarshalAs(UnmanagedType.U4)] RelatedOperation operation,
+            [MarshalAs(UnmanagedType.Bool)] bool fMissingFromCache,
             [MarshalAs(UnmanagedType.Bool)] ref bool fCancel
             );
 
@@ -1001,6 +1003,31 @@ namespace WixToolset.Mba.Core
             );
 
         /// <summary>
+        /// See <see cref="IDefaultBootstrapperApplication.PlanForwardCompatibleBundle"/>.
+        /// </summary>
+        /// <param name="wzBundleId"></param>
+        /// <param name="relationType"></param>
+        /// <param name="wzBundleTag"></param>
+        /// <param name="fPerMachine"></param>
+        /// <param name="wzVersion"></param>
+        /// <param name="fRecommendedIgnoreBundle"></param>
+        /// <param name="fCancel"></param>
+        /// <param name="fIgnoreBundle"></param>
+        /// <returns></returns>
+        [PreserveSig]
+        [return: MarshalAs(UnmanagedType.I4)]
+        int OnPlanForwardCompatibleBundle(
+            [MarshalAs(UnmanagedType.LPWStr)] string wzBundleId,
+            [MarshalAs(UnmanagedType.U4)] RelationType relationType,
+            [MarshalAs(UnmanagedType.LPWStr)] string wzBundleTag,
+            [MarshalAs(UnmanagedType.Bool)] bool fPerMachine,
+            [MarshalAs(UnmanagedType.LPWStr)] string wzVersion,
+            [MarshalAs(UnmanagedType.Bool)] bool fRecommendedIgnoreBundle,
+            [MarshalAs(UnmanagedType.Bool)] ref bool fCancel,
+            [MarshalAs(UnmanagedType.Bool)] ref bool fIgnoreBundle
+            );
+
+        /// <summary>
         /// Low level method that is called directly from the engine.
         /// </summary>
         /// <param name="message"></param>
diff --git a/src/WixToolset.Mba.Core/IDefaultBootstrapperApplication.cs b/src/WixToolset.Mba.Core/IDefaultBootstrapperApplication.cs
index 5803a26a..269d4955 100644
--- a/src/WixToolset.Mba.Core/IDefaultBootstrapperApplication.cs
+++ b/src/WixToolset.Mba.Core/IDefaultBootstrapperApplication.cs
@@ -230,6 +230,11 @@ namespace WixToolset.Mba.Core
         event EventHandler<PlanCompleteEventArgs> PlanComplete;
 
         /// <summary>
+        /// Fired when the engine is about to plan a forward compatible bundle.
+        /// </summary>
+        event EventHandler<PlanForwardCompatibleBundleEventArgs> PlanForwardCompatibleBundle;
+
+        /// <summary>
         /// Fired when the engine has completed planning a package.
         /// </summary>
         event EventHandler<PlannedPackageEventArgs> PlannedPackage;
diff --git a/src/balutil/balutil.vcxproj b/src/balutil/balutil.vcxproj
index 1c9a2372..2510b966 100644
--- a/src/balutil/balutil.vcxproj
+++ b/src/balutil/balutil.vcxproj
@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
 
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" />
+  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" />
   <Import Project="..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props" Condition="Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" />
 
   <ItemGroup Label="ProjectConfigurations">
@@ -98,7 +98,7 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props'))" />
+    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props'))" />
     <Error Condition="!Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props'))" />
     <Error Condition="!Exists('..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets'))" />
   </Target>
diff --git a/src/balutil/inc/BAFunctions.h b/src/balutil/inc/BAFunctions.h
index 6d36ad8c..66852efa 100644
--- a/src/balutil/inc/BAFunctions.h
+++ b/src/balutil/inc/BAFunctions.h
@@ -73,6 +73,7 @@ enum BA_FUNCTIONS_MESSAGE
     BA_FUNCTIONS_MESSAGE_ONSYSTEMRESTOREPOINTBEGIN = BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTBEGIN,
     BA_FUNCTIONS_MESSAGE_ONSYSTEMRESTOREPOINTCOMPLETE = BOOTSTRAPPER_APPLICATION_MESSAGE_ONSYSTEMRESTOREPOINTCOMPLETE,
     BA_FUNCTIONS_MESSAGE_ONPLANNEDPACKAGE = BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDPACKAGE,
+    BA_FUNCTIONS_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE = BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE,
 
     BA_FUNCTIONS_MESSAGE_ONTHEMELOADED = 1024,
     BA_FUNCTIONS_MESSAGE_WNDPROC,
diff --git a/src/balutil/inc/BalBaseBAFunctions.h b/src/balutil/inc/BalBaseBAFunctions.h
index 55ed8cbe..0164269c 100644
--- a/src/balutil/inc/BalBaseBAFunctions.h
+++ b/src/balutil/inc/BalBaseBAFunctions.h
@@ -104,8 +104,8 @@ public: // IBootstrapperApplication
         __in_z LPCWSTR /*wzBundleTag*/,
         __in BOOL /*fPerMachine*/,
         __in LPCWSTR /*wzVersion*/,
-        __inout BOOL* /*pfCancel*/,
-        __inout BOOL* /*pfIgnoreBundle*/
+        __in BOOL /*fMissingFromCache*/,
+        __inout BOOL* /*pfCancel*/
         )
     {
         return S_OK;
@@ -150,6 +150,7 @@ public: // IBootstrapperApplication
         __in BOOL /*fPerMachine*/,
         __in LPCWSTR /*wzVersion*/,
         __in BOOTSTRAPPER_RELATED_OPERATION /*operation*/,
+        __in BOOL /*fMissingFromCache*/,
         __inout BOOL* /*pfCancel*/
         )
     {
@@ -660,6 +661,20 @@ public: // IBootstrapperApplication
         return S_OK;
     }
 
+    virtual STDMETHODIMP OnPlanForwardCompatibleBundle(
+        __in_z LPCWSTR /*wzBundleId*/,
+        __in BOOTSTRAPPER_RELATION_TYPE /*relationType*/,
+        __in_z LPCWSTR /*wzBundleTag*/,
+        __in BOOL /*fPerMachine*/,
+        __in LPCWSTR /*wzVersion*/,
+        __in BOOL /*fRecommendedIgnoreBundle*/,
+        __inout BOOL* /*pfCancel*/,
+        __inout BOOL* /*pfIgnoreBundle*/
+        )
+    {
+        return S_OK;
+    }
+
     virtual STDMETHODIMP_(HRESULT) BAProc(
         __in BOOTSTRAPPER_APPLICATION_MESSAGE /*message*/,
         __in const LPVOID /*pvArgs*/,
diff --git a/src/balutil/inc/BalBaseBAFunctionsProc.h b/src/balutil/inc/BalBaseBAFunctionsProc.h
index 1b11c300..e1de800a 100644
--- a/src/balutil/inc/BalBaseBAFunctionsProc.h
+++ b/src/balutil/inc/BalBaseBAFunctionsProc.h
@@ -108,6 +108,7 @@ static HRESULT WINAPI BalBaseBAFunctionsProc(
         case BA_FUNCTIONS_MESSAGE_ONSYSTEMRESTOREPOINTBEGIN:
         case BA_FUNCTIONS_MESSAGE_ONSYSTEMRESTOREPOINTCOMPLETE:
         case BA_FUNCTIONS_MESSAGE_ONPLANNEDPACKAGE:
+        case BA_FUNCTIONS_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE:
             hr = BalBaseBootstrapperApplicationProc((BOOTSTRAPPER_APPLICATION_MESSAGE)message, pvArgs, pvResults, pvContext);
             break;
         case BA_FUNCTIONS_MESSAGE_ONTHEMELOADED:
diff --git a/src/balutil/inc/BalBaseBootstrapperApplication.h b/src/balutil/inc/BalBaseBootstrapperApplication.h
index ff1d07fd..c9211e0f 100644
--- a/src/balutil/inc/BalBaseBootstrapperApplication.h
+++ b/src/balutil/inc/BalBaseBootstrapperApplication.h
@@ -102,8 +102,8 @@ public: // IBootstrapperApplication
         __in_z LPCWSTR /*wzBundleTag*/,
         __in BOOL /*fPerMachine*/,
         __in LPCWSTR /*wzVersion*/,
-        __inout BOOL* pfCancel,
-        __inout BOOL* /*pfIgnoreBundle*/
+        __in BOOL /*fMissingFromCache*/,
+        __inout BOOL* pfCancel
         )
     {
         *pfCancel |= CheckCanceled();
@@ -151,6 +151,7 @@ public: // IBootstrapperApplication
         __in BOOL /*fPerMachine*/,
         __in LPCWSTR /*wzVersion*/,
         __in BOOTSTRAPPER_RELATED_OPERATION /*operation*/,
+        __in BOOL /*fMissingFromCache*/,
         __inout BOOL* pfCancel
         )
     {
@@ -845,6 +846,21 @@ public: // IBootstrapperApplication
         return S_OK;
     }
 
+    virtual STDMETHODIMP OnPlanForwardCompatibleBundle(
+        __in_z LPCWSTR /*wzBundleId*/,
+        __in BOOTSTRAPPER_RELATION_TYPE /*relationType*/,
+        __in_z LPCWSTR /*wzBundleTag*/,
+        __in BOOL /*fPerMachine*/,
+        __in LPCWSTR /*wzVersion*/,
+        __in BOOL /*fRecommendedIgnoreBundle*/,
+        __inout BOOL* pfCancel,
+        __inout BOOL* /*pfIgnoreBundle*/
+        )
+    {
+        *pfCancel |= CheckCanceled();
+        return S_OK;
+    }
+
     virtual STDMETHODIMP_(HRESULT) BAProc(
         __in BOOTSTRAPPER_APPLICATION_MESSAGE /*message*/,
         __in const LPVOID /*pvArgs*/,
diff --git a/src/balutil/inc/BalBaseBootstrapperApplicationProc.h b/src/balutil/inc/BalBaseBootstrapperApplicationProc.h
index d971a2eb..d8a6590b 100644
--- a/src/balutil/inc/BalBaseBootstrapperApplicationProc.h
+++ b/src/balutil/inc/BalBaseBootstrapperApplicationProc.h
@@ -78,7 +78,7 @@ static HRESULT BalBaseBAProcOnDetectForwardCompatibleBundle(
     __inout BA_ONDETECTFORWARDCOMPATIBLEBUNDLE_RESULTS* pResults
     )
 {
-    return pBA->OnDetectForwardCompatibleBundle(pArgs->wzBundleId, pArgs->relationType, pArgs->wzBundleTag, pArgs->fPerMachine, pArgs->wzVersion, &pResults->fCancel, &pResults->fIgnoreBundle);
+    return pBA->OnDetectForwardCompatibleBundle(pArgs->wzBundleId, pArgs->relationType, pArgs->wzBundleTag, pArgs->fPerMachine, pArgs->wzVersion, pArgs->fMissingFromCache, &pResults->fCancel);
 }
 
 static HRESULT BalBaseBAProcOnDetectUpdateBegin(
@@ -114,7 +114,7 @@ static HRESULT BalBaseBAProcOnDetectRelatedBundle(
     __inout BA_ONDETECTRELATEDBUNDLE_RESULTS* pResults
     )
 {
-    return pBA->OnDetectRelatedBundle(pArgs->wzBundleId, pArgs->relationType, pArgs->wzBundleTag, pArgs->fPerMachine, pArgs->wzVersion, pArgs->operation, &pResults->fCancel);
+    return pBA->OnDetectRelatedBundle(pArgs->wzBundleId, pArgs->relationType, pArgs->wzBundleTag, pArgs->fPerMachine, pArgs->wzVersion, pArgs->operation, pArgs->fMissingFromCache, &pResults->fCancel);
 }
 
 static HRESULT BalBaseBAProcOnDetectPackageBegin(
@@ -585,6 +585,15 @@ static HRESULT BalBaseBAProcOnSystemRestorePointComplete(
     return pBA->OnSystemRestorePointComplete(pArgs->hrStatus);
 }
 
+static HRESULT BalBaseBAProcOnPlanForwardCompatibleBundle(
+    __in IBootstrapperApplication* pBA,
+    __in BA_ONPLANFORWARDCOMPATIBLEBUNDLE_ARGS* pArgs,
+    __inout BA_ONPLANFORWARDCOMPATIBLEBUNDLE_RESULTS* pResults
+    )
+{
+    return pBA->OnPlanForwardCompatibleBundle(pArgs->wzBundleId, pArgs->relationType, pArgs->wzBundleTag, pArgs->fPerMachine, pArgs->wzVersion, pArgs->fRecommendedIgnoreBundle, &pResults->fCancel, &pResults->fIgnoreBundle);
+}
+
 /*******************************************************************
 BalBaseBootstrapperApplicationProc - requires pvContext to be of type IBootstrapperApplication.
                                      Provides a default mapping between the new message based BA interface and
@@ -796,6 +805,9 @@ static HRESULT WINAPI BalBaseBootstrapperApplicationProc(
         case BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANNEDPACKAGE:
             hr = BalBaseBAProcOnPlannedPackage(pBA, reinterpret_cast<BA_ONPLANNEDPACKAGE_ARGS*>(pvArgs), reinterpret_cast<BA_ONPLANNEDPACKAGE_RESULTS*>(pvResults));
             break;
+        case BOOTSTRAPPER_APPLICATION_MESSAGE_ONPLANFORWARDCOMPATIBLEBUNDLE:
+            hr = BalBaseBAProcOnPlanForwardCompatibleBundle(pBA, reinterpret_cast<BA_ONPLANFORWARDCOMPATIBLEBUNDLE_ARGS*>(pvArgs), reinterpret_cast<BA_ONPLANFORWARDCOMPATIBLEBUNDLE_RESULTS*>(pvResults));
+            break;
         }
     }
 
diff --git a/src/balutil/inc/IBootstrapperApplication.h b/src/balutil/inc/IBootstrapperApplication.h
index 01d0bb8a..ed70d8fe 100644
--- a/src/balutil/inc/IBootstrapperApplication.h
+++ b/src/balutil/inc/IBootstrapperApplication.h
@@ -33,8 +33,8 @@ DECLARE_INTERFACE_IID_(IBootstrapperApplication, IUnknown, "53C31D56-49C0-426B-A
         __in_z LPCWSTR wzBundleTag,
         __in BOOL fPerMachine,
         __in_z LPCWSTR wzVersion,
-        __inout BOOL* pfCancel,
-        __inout BOOL* pfIgnoreBundle
+        __in BOOL fMissingFromCache,
+        __inout BOOL* pfCancel
         ) = 0;
 
     // OnDetectUpdateBegin - called when the engine begins detection for bundle update.
@@ -71,6 +71,7 @@ DECLARE_INTERFACE_IID_(IBootstrapperApplication, IUnknown, "53C31D56-49C0-426B-A
         __in BOOL fPerMachine,
         __in_z LPCWSTR wzVersion,
         __in BOOTSTRAPPER_RELATED_OPERATION operation,
+        __in BOOL fMissingFromCache,
         __inout BOOL* pfCancel
         ) = 0;
 
@@ -540,6 +541,17 @@ DECLARE_INTERFACE_IID_(IBootstrapperApplication, IUnknown, "53C31D56-49C0-426B-A
         __in HRESULT hrStatus
         ) = 0;
 
+    STDMETHOD(OnPlanForwardCompatibleBundle)(
+        __in_z LPCWSTR wzBundleId,
+        __in BOOTSTRAPPER_RELATION_TYPE relationType,
+        __in_z LPCWSTR wzBundleTag,
+        __in BOOL fPerMachine,
+        __in_z LPCWSTR wzVersion,
+        __in BOOL fRecommendedIgnoreBundle,
+        __inout BOOL* pfCancel,
+        __inout BOOL* pfIgnoreBundle
+        ) = 0;
+
     // BAProc - The PFN_BOOTSTRAPPER_APPLICATION_PROC can call this method to give the BA raw access to the callback from the engine.
     //          This might be used to help the BA support more than one version of the engine.
     STDMETHOD(BAProc)(
diff --git a/src/balutil/packages.config b/src/balutil/packages.config
index 1ac5d2ac..76baf58e 100644
--- a/src/balutil/packages.config
+++ b/src/balutil/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Nerdbank.GitVersioning" version="3.3.37" targetFramework="native" developmentDependency="true" />
-  <package id="WixToolset.BootstrapperCore.Native" version="4.0.94" targetFramework="native" />
+  <package id="WixToolset.BootstrapperCore.Native" version="4.0.99" targetFramework="native" />
   <package id="WixToolset.DUtil" version="4.0.64" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/src/bextutil/bextutil.vcxproj b/src/bextutil/bextutil.vcxproj
index 99edfaae..6008128f 100644
--- a/src/bextutil/bextutil.vcxproj
+++ b/src/bextutil/bextutil.vcxproj
@@ -2,7 +2,7 @@
 <!-- Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. -->
 
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
-  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" />
+  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" />
   <Import Project="..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props" Condition="Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" />
 
   <ItemGroup Label="ProjectConfigurations">
@@ -87,7 +87,7 @@
     <PropertyGroup>
       <ErrorText>This project references NuGet package(s) that are missing on this computer. Use NuGet Package Restore to download them.  For more information, see http://go.microsoft.com/fwlink/?LinkID=322105. The missing file is {0}.</ErrorText>
     </PropertyGroup>
-    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props'))" />
+    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props'))" />
     <Error Condition="!Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props'))" />
     <Error Condition="!Exists('..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets'))" />
   </Target>
diff --git a/src/bextutil/packages.config b/src/bextutil/packages.config
index 1ac5d2ac..76baf58e 100644
--- a/src/bextutil/packages.config
+++ b/src/bextutil/packages.config
@@ -1,6 +1,6 @@
 <?xml version="1.0" encoding="utf-8"?>
 <packages>
   <package id="Nerdbank.GitVersioning" version="3.3.37" targetFramework="native" developmentDependency="true" />
-  <package id="WixToolset.BootstrapperCore.Native" version="4.0.94" targetFramework="native" />
+  <package id="WixToolset.BootstrapperCore.Native" version="4.0.99" targetFramework="native" />
   <package id="WixToolset.DUtil" version="4.0.64" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/src/mbanative/mbanative.vcxproj b/src/mbanative/mbanative.vcxproj
index 0c67b548..cea2cddc 100644
--- a/src/mbanative/mbanative.vcxproj
+++ b/src/mbanative/mbanative.vcxproj
@@ -5,7 +5,7 @@
   <Import Project="..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.props" Condition="Exists('..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.props')" />
   <Import Project="..\..\packages\Microsoft.SourceLink.Common.1.0.0\build\Microsoft.SourceLink.Common.props" Condition="Exists('..\..\packages\Microsoft.SourceLink.Common.1.0.0\build\Microsoft.SourceLink.Common.props')" />
   <Import Project="..\..\packages\Microsoft.Build.Tasks.Git.1.0.0\build\Microsoft.Build.Tasks.Git.props" Condition="Exists('..\..\packages\Microsoft.Build.Tasks.Git.1.0.0\build\Microsoft.Build.Tasks.Git.props')" />
-  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" />
+  <Import Project="..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" />
   <Import Project="..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props" Condition="Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" />
 
   <ItemGroup Label="ProjectConfigurations">
@@ -96,7 +96,7 @@
     <Error Condition="!Exists('..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.props'))" />
     <Error Condition="!Exists('..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Microsoft.SourceLink.GitHub.1.0.0\build\Microsoft.SourceLink.GitHub.targets'))" />
     <Error Condition="!Exists('..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\Nerdbank.GitVersioning.3.3.37\build\Nerdbank.GitVersioning.targets'))" />
-    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props'))" />
+    <Error Condition="!Exists('..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props'))" />
     <Error Condition="!Exists('..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props'))" />
   </Target>
 </Project>
\ No newline at end of file
diff --git a/src/mbanative/packages.config b/src/mbanative/packages.config
index 52a8333b..b9f93c69 100644
--- a/src/mbanative/packages.config
+++ b/src/mbanative/packages.config
@@ -4,6 +4,6 @@
   <package id="Microsoft.SourceLink.Common" version="1.0.0" targetFramework="native" developmentDependency="true" />
   <package id="Microsoft.SourceLink.GitHub" version="1.0.0" targetFramework="native" developmentDependency="true" />
   <package id="Nerdbank.GitVersioning" version="3.3.37" targetFramework="native" developmentDependency="true" />
-  <package id="WixToolset.BootstrapperCore.Native" version="4.0.94" targetFramework="native" />
+  <package id="WixToolset.BootstrapperCore.Native" version="4.0.99" targetFramework="native" />
   <package id="WixToolset.DUtil" version="4.0.64" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/src/test/BalUtilUnitTest/BalUtilUnitTest.vcxproj b/src/test/BalUtilUnitTest/BalUtilUnitTest.vcxproj
index a901712e..47bf1285 100644
--- a/src/test/BalUtilUnitTest/BalUtilUnitTest.vcxproj
+++ b/src/test/BalUtilUnitTest/BalUtilUnitTest.vcxproj
@@ -4,7 +4,7 @@
 
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props" Condition="Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props')" />
-  <Import Project="..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" />
+  <Import Project="..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" />
   <Import Project="..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props" Condition="Exists('..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
@@ -69,7 +69,7 @@
     </PropertyGroup>
     <Error Condition="!Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props'))" />
     <Error Condition="!Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.targets'))" />
-    <Error Condition="!Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props'))" />
+    <Error Condition="!Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props'))" />
     <Error Condition="!Exists('..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props'))" />
   </Target>
 </Project>
diff --git a/src/test/BalUtilUnitTest/packages.config b/src/test/BalUtilUnitTest/packages.config
index 768cc4cc..456f4a1f 100644
--- a/src/test/BalUtilUnitTest/packages.config
+++ b/src/test/BalUtilUnitTest/packages.config
@@ -10,6 +10,6 @@
   <package id="xunit.runner.visualstudio" version="2.4.1" />
   <package id="WixBuildTools.TestSupport" version="4.0.47" />
   <package id="WixBuildTools.TestSupport.Native" version="4.0.47" />
-  <package id="WixToolset.BootstrapperCore.Native" version="4.0.94" targetFramework="native" />
+  <package id="WixToolset.BootstrapperCore.Native" version="4.0.99" targetFramework="native" />
   <package id="WixToolset.DUtil" version="4.0.64" targetFramework="native" />
 </packages>
\ No newline at end of file
diff --git a/src/test/BextUtilUnitTest/BextUtilUnitTest.vcxproj b/src/test/BextUtilUnitTest/BextUtilUnitTest.vcxproj
index 22e84e9a..3e30a74e 100644
--- a/src/test/BextUtilUnitTest/BextUtilUnitTest.vcxproj
+++ b/src/test/BextUtilUnitTest/BextUtilUnitTest.vcxproj
@@ -4,7 +4,7 @@
 
 <Project DefaultTargets="Build" ToolsVersion="15.0" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
   <Import Project="..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props" Condition="Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props')" />
-  <Import Project="..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" />
+  <Import Project="..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props" Condition="Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" />
   <Import Project="..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props" Condition="Exists('..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" />
   <ItemGroup Label="ProjectConfigurations">
     <ProjectConfiguration Include="Debug|Win32">
@@ -68,7 +68,7 @@
     </PropertyGroup>
     <Error Condition="!Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.props'))" />
     <Error Condition="!Exists('..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.targets')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixBuildTools.TestSupport.Native.4.0.47\build\WixBuildTools.TestSupport.Native.targets'))" />
-    <Error Condition="!Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.94\build\WixToolset.BootstrapperCore.Native.props'))" />
+    <Error Condition="!Exists('..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.BootstrapperCore.Native.4.0.99\build\WixToolset.BootstrapperCore.Native.props'))" />
     <Error Condition="!Exists('..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props')" Text="$([System.String]::Format('$(ErrorText)', '..\..\..\packages\WixToolset.DUtil.4.0.64\build\WixToolset.DUtil.props'))" />
   </Target>
 </Project>
diff --git a/src/test/BextUtilUnitTest/packages.config b/src/test/BextUtilUnitTest/packages.config
index 768cc4cc..456f4a1f 100644
--- a/src/test/BextUtilUnitTest/packages.config
+++ b/src/test/BextUtilUnitTest/packages.config
@@ -10,6 +10,6 @@
   <package id="xunit.runner.visualstudio" version="2.4.1" />
   <package id="WixBuildTools.TestSupport" version="4.0.47" />
   <package id="WixBuildTools.TestSupport.Native" version="4.0.47" />
-  <package id="WixToolset.BootstrapperCore.Native" version="4.0.94" targetFramework="native" />
+  <package id="WixToolset.BootstrapperCore.Native" version="4.0.99" targetFramework="native" />
   <package id="WixToolset.DUtil" version="4.0.64" targetFramework="native" />
 </packages>
\ No newline at end of file