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http 400 Bad Request on owaauth.dll

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  • http 400 Bad Request on owaauth.dll

    Troubleshoot MS exchange 2003 on SB 2003. Troubleshooting Active sync on SBS 2003.

    I followed the instructions in this article:

    to fix activesync. This worked but somehow killed outlook web access which now displys the log in page, but gives an error once username and password are entered.

    thanks -T

  • #2
    Re: http 400 Bad Request on owaauth.dll

    Error 400 is usually the hostname or hostheader doesn't match.

    it would occur if you have, for instance, multiple sites, listening on the same ip, same port, with unique host headers...
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    • #3
      Re: http 400 Bad Request on owaauth.dll

      Is this SBS Premium with ISA? If so there are known problems running OWA with FBA (Which SBS does by default) alongside Activesync and/or RPC over HTTP(s) with them both listening on the same IP.
      BSc, MCSA: Server 2008, MCSE, MCSA: Messaging, MCTS
      Cruachan's Blog


      • #4
        Re: http 400 Bad Request on owaauth.dll

        But if you run the CEICW and have the latest patches, it runs automagically. Test using the SBS BPA and see what it gives.

        Steven Teiger [SBS-MVP(2003-2009)]
        Iím honoured to have been selected for the SMB 150 list for 2013. This is the third time in succession (no logo available for 2011) that I have been honoured with this award.

        We donít stop playing because we grow old, we grow old because we stop playing.