diff --git a/src/cascadia/CascadiaPackage/Package-Can.appxmanifest b/src/cascadia/CascadiaPackage/Package-Can.appxmanifest
index 04c7960ce953..66564e799ff9 100644
--- a/src/cascadia/CascadiaPackage/Package-Can.appxmanifest
+++ b/src/cascadia/CascadiaPackage/Package-Can.appxmanifest
@@ -8,13 +8,14 @@
   xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
   xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
   xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
+  xmlns:uap17="http://schemas.microsoft.com/appx/manifest/uap/windows10/17"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
   xmlns:desktop6="http://schemas.microsoft.com/appx/manifest/desktop/windows10/6"
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
   xmlns:virtualization="http://schemas.microsoft.com/appx/manifest/virtualization/windows10"
-  IgnorableNamespaces="uap mp rescap uap3 desktop6 virtualization">
+  IgnorableNamespaces="uap mp rescap uap3 uap17 desktop6 virtualization">
 
   <Identity
     Name="Microsoft.WindowsTerminalCanary"
@@ -33,6 +34,7 @@
         <virtualization:ExcludedKey>HKEY_CURRENT_USER\Console\%%Startup</virtualization:ExcludedKey>
       </virtualization:ExcludedKeys>
     </virtualization:RegistryWriteVirtualization>
+    <uap17:UpdateWhileInUse>defer</uap17:UpdateWhileInUse>
   </Properties>
 
   <Dependencies>
diff --git a/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest b/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest
index 4a0735bb2063..d8ceefaeef62 100644
--- a/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest
+++ b/src/cascadia/CascadiaPackage/Package-Dev.appxmanifest
@@ -7,6 +7,7 @@
   xmlns:uap="http://schemas.microsoft.com/appx/manifest/uap/windows10"
   xmlns:uap3="http://schemas.microsoft.com/appx/manifest/uap/windows10/3"
   xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
+  xmlns:uap17="http://schemas.microsoft.com/appx/manifest/uap/windows10/17"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
@@ -14,7 +15,7 @@
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
   xmlns:virtualization="http://schemas.microsoft.com/appx/manifest/virtualization/windows10"
   xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
-  IgnorableNamespaces="uap mp rescap uap3 desktop6 virtualization">
+  IgnorableNamespaces="uap mp rescap uap3 uap17 desktop6 virtualization">
 
   <Identity
     Name="WindowsTerminalDev"
@@ -33,6 +34,7 @@
         <virtualization:ExcludedKey>HKEY_CURRENT_USER\Console\%%Startup</virtualization:ExcludedKey>
       </virtualization:ExcludedKeys>
     </virtualization:RegistryWriteVirtualization>
+    <uap17:UpdateWhileInUse>defer</uap17:UpdateWhileInUse>
   </Properties>
 
   <Dependencies>
diff --git a/src/cascadia/CascadiaPackage/Package-Pre.appxmanifest b/src/cascadia/CascadiaPackage/Package-Pre.appxmanifest
index 98fb12b94558..3a7bf26e0f77 100644
--- a/src/cascadia/CascadiaPackage/Package-Pre.appxmanifest
+++ b/src/cascadia/CascadiaPackage/Package-Pre.appxmanifest
@@ -9,13 +9,14 @@
   xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
   xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
   xmlns:uap7="http://schemas.microsoft.com/appx/manifest/uap/windows10/7"
+  xmlns:uap17="http://schemas.microsoft.com/appx/manifest/uap/windows10/17"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
   xmlns:desktop6="http://schemas.microsoft.com/appx/manifest/desktop/windows10/6"
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
   xmlns:virtualization="http://schemas.microsoft.com/appx/manifest/virtualization/windows10"
-  IgnorableNamespaces="uap mp rescap uap3 desktop6 virtualization">
+  IgnorableNamespaces="uap mp rescap uap3 uap17 desktop6 virtualization">
 
   <Identity
     Name="Microsoft.WindowsTerminalPreview"
@@ -34,6 +35,7 @@
         <virtualization:ExcludedKey>HKEY_CURRENT_USER\Console\%%Startup</virtualization:ExcludedKey>
       </virtualization:ExcludedKeys>
     </virtualization:RegistryWriteVirtualization>
+    <uap17:UpdateWhileInUse>defer</uap17:UpdateWhileInUse>
   </Properties>
 
   <Dependencies>
diff --git a/src/cascadia/CascadiaPackage/Package.appxmanifest b/src/cascadia/CascadiaPackage/Package.appxmanifest
index c123778d1e93..f04863da27c1 100644
--- a/src/cascadia/CascadiaPackage/Package.appxmanifest
+++ b/src/cascadia/CascadiaPackage/Package.appxmanifest
@@ -9,13 +9,14 @@
   xmlns:uap4="http://schemas.microsoft.com/appx/manifest/uap/windows10/4"
   xmlns:uap5="http://schemas.microsoft.com/appx/manifest/uap/windows10/5"
   xmlns:uap7="http://schemas.microsoft.com/appx/manifest/uap/windows10/7"
+  xmlns:uap17="http://schemas.microsoft.com/appx/manifest/uap/windows10/17"
   xmlns:desktop="http://schemas.microsoft.com/appx/manifest/desktop/windows10"
   xmlns:desktop4="http://schemas.microsoft.com/appx/manifest/desktop/windows10/4"
   xmlns:desktop5="http://schemas.microsoft.com/appx/manifest/desktop/windows10/5"
   xmlns:desktop6="http://schemas.microsoft.com/appx/manifest/desktop/windows10/6"
   xmlns:rescap="http://schemas.microsoft.com/appx/manifest/foundation/windows10/restrictedcapabilities"
   xmlns:virtualization="http://schemas.microsoft.com/appx/manifest/virtualization/windows10"
-  IgnorableNamespaces="uap mp rescap uap3 desktop6 virtualization">
+  IgnorableNamespaces="uap mp rescap uap3 uap17 desktop6 virtualization">
 
   <Identity
     Name="Microsoft.WindowsTerminal"
@@ -34,6 +35,7 @@
         <virtualization:ExcludedKey>HKEY_CURRENT_USER\Console\%%Startup</virtualization:ExcludedKey>
       </virtualization:ExcludedKeys>
     </virtualization:RegistryWriteVirtualization>
+    <uap17:UpdateWhileInUse>defer</uap17:UpdateWhileInUse>
   </Properties>
 
   <Dependencies>