Installed Exchange 2016 CU3 on a new Windows Server 2012 R2 server. Exchange installed fine, no errors. After install, I rebooted the server. I am trying to access both the ECP and the OWA sites and neither will load. In the application log I see an error 1000 w3wp.exe is crashing in module wsmsvc.dll. The system log shows event 5011, source WAS, A process serving application pool 'MSExchangePowerShellAppPool' suffered a fatal communication error with the Windows Process Activation Service. Also, the exchange management shell won't connect either. It gets a error The WS-Management service does not support the request. The existing server on the network is Exchange 2010 SP3 Rollup 15.
Any help so I can get the new exchange working so I can move my mailboxes over, etc?