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How do I stop Outlook from prompting for password Intermittently?

I have a user who has Outlook 2007 and Exchange 2003 (SBS).  I'm having problems his workstation intermitantly popping up a login screen.  Sometimes Outlook will launch without a problem and others the login screen continually pops up (no passwords work).  He ends up restarting and then it seems to work after 1 or 2 reboots.

I am new to this customer so I don't know much about how it was initially configured except that he previously was setup to connect to a hosted exchange server with a third party vendor.

He is configured to connect to his Exchange server (which is local in his office) and a standard configuration is used for the exchange profile on his workstation.   He does have some pop accounts configured too, all of which test successfully.

Anyone have any ideas why the login screen might come up intermitantly?  Could it be related to previous configurations to the hosted exchange, and if so where would I check to change these settings other than the profile.

Thx.
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rlw888
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rlw888
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1 Solution
 
agriesserCommented:
Is this client member of the domain at your customers site?
I once had the problem on my Vista Laptop being not part of our domain at work.

Are you sure that no passwords work?
Have you made sure to add the domainname in the user account field too, e.g. if your domain is "my-company", use
"my-company\user" as the username.

This should usually work.

I never found out the reason why it behaved that strangely, but some time ago I needed to testdrive an outlook 2003 plugin on my machine and therefore uninstalled office 2007. After I finished the testing, I reinstalled Office 2007 and since then, the problem has gone.

So I'd suggest to delete all profiles (back them up before, just in case you need some stuff afterwards) and start over with a fresh installation of Office 2007.
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rlw888Author Commented:
Yes, the computer is definitely a domain member running windows XP SP2.  We have definitely tried logging in with his username and password with the domain name included as you specified above, but were still unsuccessful.  Since its seems to be intermitent I was assuming it was related to the fact that it had previously been configured to connect to a hosted exchange server, and was hoping there was another solution other than re-installing, but maybe that's what I have to do to resolve it.
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agriesserCommented:
I'm fairly sure that there are possible solutions to get it working without reinstalling (e.g. have you tried the "Detect and Repair" option in Outlook 2007 already?), but the question is: What's faster? Googling and trying around many hours or doing a complete reinstall that probably takes less than half an hour?
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rlw888Author Commented:
Just thought I would update you on this problem.  I think the problem has been resolved.  I ended up changing the "Logon network security" option on the security configuration tab in the Microsoft Exchange options (More settings button on account settings page) from "Negotiate Authentication" to "Password Authentication (NTLM)" and it seems to have worked.  Thank you for your help with this.
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agriesserCommented:
That's interesting information, thanks for sharing it with us.
Please don't forget to close the question.
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