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OWA won't connect to 2010 accounts from 2013

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  • OWA won't connect to 2010 accounts from 2013

    Coexistence scenario with Exchange 2010 and Exchange 2013 DAG (2CAS + 2MBX)
    Mailboxes hosted on 2013 are no problem... but mailboxes which are still on 2010 receive an HTTP 500 error immediately after logging into OWA on the 2013 CAS server.

  • #2
    Re: OWA won't connect to 2010 accounts from 2013

    How have you configured coexistence?
    Do you have unique URLs for Exchange 2010 and 2013? Can both be seen from the client?

    Have you read the Client Access coexistence documentation on TechNet?

    Simon.
    --
    Simon Butler
    Exchange MVP

    Blog: http://blog.sembee.co.uk/
    More Exchange Content: http://exchange.sembee.info/
    Exchange Resources List: http://exbpa.com/
    In the UK? Hire me: http://www.sembee.co.uk/

    Sembee is a registered trademark, used here with permission.

    Comment


    • #3
      Re: OWA won't connect to 2010 accounts from 2013

      The servers are configured with unic hostnames, certificates are installed. Everything is configured according to the documentation. The owa2010 is accessible from the internet.
      When user from 2010 tries to login I receive HTTP Error 500. Tried everything...

      Comment


      • #4
        Re: OWA won't connect to 2010 accounts from 2013

        So if an Exchange 2010 user hits the Exchange 2010 server directly, they can login?
        Does the URL change in the browser after logging in to Exchange 2013 OWA? It should be redirecting.

        My instinct is that you have made an error in the configuration somewhere. URL set incorrectly, authentication type not correct/same. Something like that.

        Simon.
        --
        Simon Butler
        Exchange MVP

        Blog: http://blog.sembee.co.uk/
        More Exchange Content: http://exchange.sembee.info/
        Exchange Resources List: http://exbpa.com/
        In the UK? Hire me: http://www.sembee.co.uk/

        Sembee is a registered trademark, used here with permission.

        Comment

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