Outlook could not log on & The name could not be resolved errors

Posted on 2004-11-02
Last Modified: 2011-08-18
Hi All

Really appreciate help on this as its driving me nuts!

Outlook 2002 (XP) on a newly installed Exchange 2000 Enterprise Server.

Setting up email accounts has been easy up to now. Created all mailboxes that I wanted via AD Users and Computers by right clicking acount and choosing 'Create Mailbox'. I then setup the external SMTP addresses by going to Exchange System Manager and changing the recipient policies.

On all the Outlook accounts I removed thier POP3 accounts and added a new account by choosing 'Microsoft Exchange Server' and typing name of server, adding part or all of the name and clicking 'check name'. All has been fine up until now!

When I click check name I get the following error message:

Outlook could not log on. Chaeck to make sure you are connected to the network and you are using the proper server and mailbox name. The Microsoft Exchange Address Book was unable to log on to the Microsoft Exchange Server computer. Contact your system administrator if the problem persists.

If I click OK it brings up another screen to confirm the exchange server computer name and the username. Clicking 'check name' just gives the same error as above but when I click OK to that error message I get this one:

The name could not be resolved. The action could not be completed.

If I leave the setting as it is and try to open Outlook I get the error: The Microsoft Exchange Server is unavailable with the usual Retry, Work Offline and Cancel.

Now, its not a DNS problem. I can ping the server by FQDN as much as I like and each ping is successful. Its not the account on the server because if I go to another PC, login as the user and setup the account its fine. It seems to be very specific to the PC itself. I have tried deleting all profiles and starting again, I have tried uninstalling Outlook, rebooting and adding it again.

Need some help with this. Cheers
Question by:Welltech-IT
    LVL 17

    Expert Comment

    Hi Welltech, where are you running the each individual computer or from a central location?

    Author Comment

    At each individual computer, its just this one computer thats giving me the trouble though.
    LVL 17

    Expert Comment

    Well, it seems like it must be something quite simple, such as a bad netwrok jack. Can you take the computer somewhere else and try?

    Author Comment

    The PC works absolutely fine on the network and can access the same server for all other services except for Exchange. I have already plugged it into a different port but it gave the same errors.
    Thanks for the quick reply though

    Author Comment

    Well I answered my own question in the end.

    Just in case anyone has the same problem:

    TCP/IP needs to be reinstalled
    Open Network Connections and right click the Local Area Connection - choose properties
    Install another protocol as a place holder for the network card (NetBEUI is a good one)
    Uninstall TCP/IP and reboot
    Once rebooted reinstall TCP/IP and reboot again (just to be sure)

    Try it again, if not there's a registry key that needs to be replaced and you can copy it from another users PC. Problem is I have not got details of the reg key thats needed, Reinstalling TCP/IP Worked for me though

    Accepted Solution

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