updated

windows/client-management/mdm/TOC.md

@@ -272,6 +272,7 @@
 #### [ADMX_WindowsStore](policy-csp-admx-windowsstore.md)
 #### [ADMX_WinInit](policy-csp-admx-wininit.md)
 #### [ADMX_WinLogon](policy-csp-admx-winlogon.md)
+#### [ADMX-Winsrv](policy-csp-admx-winsrv.md)
 #### [ADMX_wlansvc](policy-csp-admx-wlansvc.md)
 #### [ADMX_WPN](policy-csp-admx-wpn.md)
 #### [ApplicationDefaults](policy-csp-applicationdefaults.md)

windows/client-management/mdm/policies-in-policy-csp-admx-backed.md

@@ -1333,6 +1333,7 @@ ms.date: 10/08/2020
 - [ADMX_WinLogon/LogonHoursPolicyDescription](./policy-csp-admx-winlogon.md#admx-winlogon-logonhourspolicydescription)
 - [ADMX_WinLogon/ReportCachedLogonPolicyDescription](./policy-csp-admx-winlogon.md#admx-winlogon-reportcachedlogonpolicydescription)
 - [ADMX_WinLogon/SoftwareSASGeneration](./policy-csp-admx-winlogon.md#admx-winlogon-softwaresasgeneration)
+- [ADMX_Winsrv/AllowBlockingAppsAtShutdown](./policy-csp-admx-winsrv.md#admx-winsrv-allowblockingappsatshutdown)
 - [ADMX_wlansvc/SetCost](./policy-csp-admx-wlansvc.md#admx-wlansvc-setcost)
 - [ADMX_wlansvc/SetPINEnforced](./policy-csp-admx-wlansvc.md#admx-wlansvc-setpinenforced)
 - [ADMX_wlansvc/SetPINPreferred](./policy-csp-admx-wlansvc.md#admx-wlansvc-setpinpreferred)

windows/client-management/mdm/policy-configuration-service-provider.md

@@ -8547,6 +8547,14 @@ The following diagram shows the Policy configuration service provider in tree fo
   </dd>
 </dl>
 
+### Winsrv policies
+
+<dl>
+  <dd>
+    <a href="./policy-csp-Winsrv.md#winsrv-allowblockingappsatshutdown" id="winsrv-allowblockingappsatshutdown">Winsrv/AllowBlockingAppsAtShutdown</a>
+  </dd>
+</dl>
+
 ## Policies in Policy CSP supported by Group Policy and ADMX-backed policies in Policy CSP
 - [Policies in Policy CSP supported by Group Policy](policy-csps-supported-by-group-policy.md)
 - [ADMX-backed policies in Policy CSP](policy-csps-admx-backed.md)

windows/client-management/mdm/policy-csp-admx-winsrv.md

@@ -0,0 +1,119 @@
+---
+title: Policy CSP - ADMX_Winsrv
+description: Policy CSP - ADMX_Winsrv
+ms.author: dansimp
+ms.localizationpriority: medium
+ms.topic: article
+ms.prod: w10
+ms.technology: windows
+author: manikadhiman
+ms.date: 02/25/2021
+ms.reviewer: 
+manager: dansimp
+---
+
+# Policy CSP - ADMX_Winsrv
+> [!WARNING]
+> Some information relates to prereleased products, which may be substantially modified before it's commercially released. Microsoft makes no warranties, expressed or implied, concerning the information provided here.
+
+<hr/>
+
+<!--Policies-->
+## ADMX_Winsrv policies  
+
+<dl>
+  <dd>
+    <a href="#admx-winsrv-allowblockingappsatshutdown">ADMX_Winsrv/AllowBlockingAppsAtShutdown</a>
+  </dd>
+</dl>
+
+
+<hr/>
+
+<!--Policy-->
+<a href="" id="admx-winsrv.-allowblockingappsatshutdown"></a>**ADMX_Winsrv/AllowBlockingAppsAtShutdown**  
+
+<!--SupportedSKUs-->
+<table>
+<tr>
+    <th>Windows Edition</th>
+    <th>Supported?</th>
+</tr>
+<tr>
+    <td>Home</td>
+    <td><img src="images/crossmark.png" alt="cross mark" /></td>
+</tr>
+<tr>
+    <td>Pro</td>
+    <td><img src="images/crossmark.png" alt="cross mark" /></td>
+</tr>
+<tr>
+    <td>Business</td>
+    <td><img src="images/crossmark.png" alt="cross mark" /></td>
+</tr>
+<tr>
+    <td>Enterprise</td>
+    <td><img src="images/checkmark.png" alt="check mark" /></td>
+</tr>
+<tr>
+    <td>Education</td>
+    <td><img src="images/crossmark.png" alt="cross mark" /></td>
+</tr>
+</table>
+
+<!--/SupportedSKUs-->
+<hr/>
+
+<!--Scope-->
+[Scope](./policy-configuration-service-provider.md#policy-scope):
+
+> [!div class = "checklist"]
+> * Device
+
+<hr/>
+
+<!--/Scope-->
+<!--Description-->
+Available in the latest Windows 10 Insider Preview Build. This policy setting specifies whether Windows will allow console applications and GUI applications without visible top-level windows to block or cancel shutdown.
+
+By default, such applications are automatically terminated if they attempt to cancel shutdown or block it indefinitely.
+
+- If you enable this setting, console applications or GUI applications without visible top-level windows that block or cancel shutdown will not be automatically terminated during shutdown.
+- If you disable or do not configure this setting, these applications will be automatically terminated during shutdown, helping to ensure that windows can shut down faster and more smoothly.
+
+> [!NOTE]
+> This policy setting applies to all sites in Trusted zones.
+
+<!--/Description-->
+> [!TIP]
+> This is an ADMX-backed policy and requires a special SyncML format to enable or disable. For details, see [Understanding ADMX-backed policies](./understanding-admx-backed-policies.md).
+> 
+> You must specify the data type in the SyncML as &lt;Format&gt;chr&lt;/Format&gt;. For an example SyncML, refer to [Enabling a policy](./understanding-admx-backed-policies.md#enabling-a-policy).
+> 
+> The payload of the SyncML must be XML-encoded; for this XML encoding, there are a variety of online encoders that you can use. To avoid encoding the payload, you can use CDATA if your MDM supports it. For more information, see [CDATA Sections](http://www.w3.org/TR/REC-xml/#sec-cdata-sect).
+
+<!--ADMXBacked-->
+ADMX Info:  
+-   GP English name: *Turn off automatic termination of applications that block or cancel shutdown*
+-   GP name: *AllowBlockingAppsAtShutdown*
+-   GP path: *System\Shutdown Options*
+-   GP ADMX file name: *Winsrv.admx*
+
+<!--/ADMXBacked-->
+<!--/Policy-->
+<hr/>
+
+Footnotes:
+
+- 1 - Available in Windows 10, version 1607
+- 2 - Available in Windows 10, version 1703
+- 3 - Available in Windows 10, version 1709
+- 4 - Available in Windows 10, version 1803
+- 5 - Available in Windows 10, version 1809
+- 6 - Available in Windows 10, version 1903
+- 7 - Available in Windows 10, version 1909
+- 8 - Available in Windows 10, version 2004
+- 9 - Available in Windows 10, version 20H2
+
+<!--/Policies-->
+