Exchange 2010 to 2016 migration

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?
David BarmanAsked:
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David BarmanConnect With a Mentor Author Commented:
Problem solved. Found solution:

By adding the .NET 4.5 extensibility and ASP .NET 3.5 and 4.5 to the IIS role, it allowed the ECP and OWA to work.
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