1 files changed, 11 insertions, 1 deletions

diff --git a/src/wixext/IIsCompiler.cs b/src/wixext/IIsCompiler.cs
index 952a4a67..cb573ad1 100644
--- a/src/wixext/IIsCompiler.cs
+++ b/src/wixext/IIsCompiler.cs
@@ -140,7 +140,7 @@ namespace WixToolset.Iis
         {
             var sourceLineNumbers = this.ParseHelper.GetSourceLineNumbers(element);
             Identifier id = null;
-            int attributes = 0;
+            int attributes = 8; // SCA_CERT_ATTRIBUTE_VITAL
             string binaryRef = null;
             string certificatePath = null;
             string name = null;
@@ -244,6 +244,16 @@ namespace WixToolset.Iis
                                 }
                             }
                             break;
+                        case "Vital":
+                            if (YesNoType.Yes == this.ParseHelper.GetAttributeYesNoValue(sourceLineNumbers, attrib))
+                            {
+                                attributes |= 8; // SCA_CERT_ATTRIBUTE_VITAL
+                            }
+                            else
+                            {
+                                attributes &= ~8; // SCA_CERT_ATTRIBUTE_VITAL
+                            }
+                            break;
                         default:
                             this.ParseHelper.UnexpectedAttribute(element, attrib);
                             break;