I have 4 Exchange server, 2 CAS and 2 MBX. Migrated from 2010.
Everything works perfectly, but sometimes users can't change their password. If I move them to another database, sometimes it works, sometimes it doesn't. Then opening from a different computer, works or doesn't. I can't seem to find a way for it to always work or never work....driving me nuts.
Both CAS servers seem to have the problem, no mailboxes are hosted on Exchange 2010 anymore.
Already tried to reset the ECP virtualdirectory, nothing changes.
When I change the web.config file, it gives a different error messages, but still weird.
Error is:
Server Error in '/ecp' Application.
Runtime Error
Description: An exception occurred while processing your request. Additionally, another exception occurred while executing the custom error page for the first exception. The request has been terminated.