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Outlook 2010 cannot log on to Exchange 2010 Server

Posted on 2011-09-28
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Last Modified: 2012-05-12
It allows me to set up the Exchange account via Control Panel | Mail, but when I open Outlook I get this message:

“Outlook cannot log on. Verify you are connected to the network and are using the proper server and mailbox name.  The connection to Microsoft Exchange is unavailable. Outlook must be online or connected to complete this action.”

We use self-generated certificates for Exchange OWA if that matters.

Any suggestions?
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Question by:mihaisz
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Expert Comment

by:dexIT
ID: 36719603
Internal CA do matter, you can install the certificate on the computer you're trying to use outside of the network. I am assuming you are attempting to connect externally, right?
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Author Comment

by:mihaisz
ID: 36744343
No - external connections work fine. The internal ones are not working.
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Expert Comment

by:dexIT
ID: 36891464
Is SP1 installed for Outlook?
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Accepted Solution

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mihaisz earned 0 total points
ID: 36892865
I did a reboot of the Exchange server and it worked..Sorry for the trouble.
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Author Closing Comment

by:mihaisz
ID: 36915498
non-issue
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