This article goes through the steps needed to check the PowerShell endpoint and that it is correctly configured for an on-premise Exchange.
The PowerShell endpoint address is derived from the EWS URL which is entered in the ODMHE (On Demand Migration Hybrid Exchange) configuration
http(s)://server-name/EWS/Exchange.asmx -> http(s)://server-name/powershell
The following steps will verify whether the PowerShell endpoint is correctly configured in the on-premise Exchange.

