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OWA problems with 2003/2010 migration

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  • OWA problems with 2003/2010 migration

    We are transitioning from a single server exchange 2003 to 2010. Before install, I created my legacy DNS name, set it up both internally and externally for DNS. We use a wildcard cert that has already been applied to the 2003 server. We have a large contingency of users who use OWA so an extended outage was not going to be good. So once DNS populated, I changed our link on our intranet page to point to the new legacy name ( so I was free to work with the new DNS name for (

    I installed 2010, Single server running CAS, Hub and Mailbox. For the OWA settings, I have applied my wildcard cert to the 2010 server. Internally I changed DNS for to the 2010 server, so when I go to I am presented with the login form.

    I set the owa virtual directory for exchange2003url to point to my legacy address: set-OWAVirtualDirectory 2010server\owa -externalurl -exchange2003url

    On the exchange 2003 server, I verified that we are using forms based authentication for the http protocal.

    But when I try to test this internally, I can get to the 2010 login but when I log in with my email username/password (that lives on 2003 still) I get the following error:

    Your request couldn't be completed because no server with the correct security settings was found to handle the request. If the problem continues, contact your helpdesk.

    I need to make this work internally on the LAN before I can change the DNS for the External for so that I can limit the outage to my users.

    What steps am I missing here?

  • #2
    Re: OWA problems with 2003/2010 migration

    Resolved the issue with a restart of IIS.