Based on internal discussion

Since the latest connector version (1.5.1975.0) the EnvironmentName parameter must be specified for the registration. This might change in the future. Because of some incoming cases we must update the article to reflects the current way its working.

Author: githubarpyka

articles/active-directory/manage-apps/application-proxy-connectors.md

@@ -156,8 +156,11 @@ If a connector is not connected to the service for several months, its certifica
 
 ```
 Import-module AppProxyPSModule
-Register-AppProxyConnector
+Register-AppProxyConnector -EnvironmentName "AzureCloud"
 ```
+
+For goverment setup the parameter EnvironmentName must be specified as "AzureUSGovernment".
+
 To learn more about how to verify the certificate and troubleshoot problems see [Verify Machine and backend components support for Application Proxy trust certificate](application-proxy-connector-installation-problem.md#verify-machine-and-backend-components-support-for-application-proxy-trust-certificate).
 
 ## Under the hood