diff --git a/packaging/msix/AppxManifest.xml b/packaging/msix/AppxManifest.xml
index 6b33119e6..8877ddaa9 100644
--- a/packaging/msix/AppxManifest.xml
+++ b/packaging/msix/AppxManifest.xml
@@ -1,13 +1,14 @@
 <?xml version="1.0" encoding="utf-8"?>
 
-<Package IgnorableNamespaces="uap mp rescap desktop6"
+<Package IgnorableNamespaces="uap mp rescap desktop6 uap17"
   xmlns="http://schemas.microsoft.com/appx/manifest/foundation/windows10"
   xmlns:mp="http://schemas.microsoft.com/appx/2014/phone/manifest"
   xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
   xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop6="http://schemas.microsoft.com/appx/manifest/desktop/windows10/6"
-  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities">
+  xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
+  xmlns:uap17="http://schemas.microsoft.com/appx/manifest/uap/windows10/17">
 
   <Identity Name="Microsoft.$PRODUCTNAME$" ProcessorArchitecture="$ARCH$" Publisher="$PUBLISHER$" Version="$VERSION$" />
 
@@ -17,6 +18,7 @@
     <Logo>assets\Square64x64Logo.png</Logo>
     <desktop6:RegistryWriteVirtualization>disabled</desktop6:RegistryWriteVirtualization>
     <desktop6:FileSystemWriteVirtualization>disabled</desktop6:FileSystemWriteVirtualization>
+    <uap17:UpdateWhileInUse>defer</uap17:UpdateWhileInUse>
   </Properties>
 
   <Dependencies>