Exchange 2010 OWA error HTTP 500

 

After the logon in the OWA of Exchange Server 2010, the “Website can not display the page” error is returned. Also, the OWA error HTTP 500 code is returned:

In environments that uses TMG for OWA’s publishing, the error is HTTP 502:

Cause:

This problem occurs because OWA uses Forms-based authentication to authenticate users, if the Microsoft Exchange Forms-Based Authentication Service is not running, OWA cannot perform authentication.

Resolution:

Simply perform the Microsoft Exchange Forms-Based Authentication Service service start and the problem is resolved.