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OWA Error MAPI.Session

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I have an Exchange problem that maybe someone can help me with. We have setup the Outlook Web Access on our NT4 SP6 Exchange 5.5 SP4 & IIS. When you connect you get the correct page and then you?re able to type in your alias then the username/password box opens, after putting in the DOMAIN\username and password the following error pops up. ?Internal Error: Failed to create MAPI.Session?. Any help would be much appreciated.

Thanks in Advance for your help.

Russ Crow
K/P Corp

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by m.r.wingate

Also, check out this article about the Exchange/OWA logon process, which may help isolate the problem: Q263236.

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