Exchange 2010 SP1 – Experiencing an OWA HTTP 500 Error?

I’ve seen this issue a couple of times after applying Exchange 2010 SP1 on Client Access servers. I’m presented with the OWA FBA page and enter my credentials and then boom it throws an “HTTP 500” error instead of opening the mailbox.




You tried to issue an “IISReset /NoForce” and even rebooted the server and still see the symptom.

So the issues is typically caused by the “Microsoft Exchange Forms-Based Authentication” service being in a stopped state. Starting the service immediately fixes the issue.


Why it sometimes doesn’t start automatically after a reboot of the servers is a very good question. I’ll do some more research in order to find the root cause.

Until later,

Henrik Walther
Technology Architect/Writer
MCM: Exchange 2007 | MVP: Exchange Architecture


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4 thoughts on “Exchange 2010 SP1 – Experiencing an OWA HTTP 500 Error?”

  1. 1000 thank you's your suggestion totally worked.

    How many times we're looking for the issue in the most complicated places only to find a service failed to start. I feel like an intern right about now…


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