Merge pull request #95369 from jaszperez/patch-68

windows 2019 limitation and guidance

Author: PRMerger6

articles/active-directory/manage-apps/application-proxy-add-on-premises-application.md

@@ -41,6 +41,12 @@ To use Application Proxy, you need a Windows server running Windows Server 2012
 
 For high availability in your production environment, we recommend having more than one Windows server. For this tutorial, one Windows server is sufficient.
 
+> [!IMPORTANT]
+> If you are installing the connector on Windows Server 2019 there is an HTTP2 limitation. To successfully use the connector on this version add the following registry key and restart the server:
+	```
+	HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\WinHttp\EnableDefaultHttp2 (DWORD) Value: 0 
+	```
+
 #### Recommendations for the connector server
 
 1. Physically locate the connector server close to the application servers to optimize performance between the connector and the application. For more information, see [Network topology considerations](application-proxy-network-topology.md).