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Office 2010 Prompts for Username and Password connected to 2007 Exchange

I'm fairly new to administrating this network but I recently upgrade our NLB terminal servers and also updated from Outlook 2007 to outlook 2010. Now the users are prompted after clicking on the icon to enter their username and password again before accessing their email.

Here are a few facts I know of.
1. Exchange 2007 in up to date- read online to install the rollups to resolve this issue, it didn't
2. Our TS servers are up to date
3. No authentication issues on TS servers- users able to access files as norm
4. Our TS servers were fresh installs, fresh office 2010 install but they have roaming profiles setup on this network so files are moved around, possible issue with file created in 2007 now opening in 2010?
5. Not a permission issue, happens on my admin account as well

Amit

I suggest to reboot you Exchange server and NLB server also and check again.

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lruiz52

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ravenrx7

ASKER

We've rebooted all NLB servers and exchange server since

ravenrx7

ASKER

Well that fix for vista is what we have, but on a domain wide scale, I don't see us fixing every user like that.

Amit

How you upgraded to Outlook 2010, have you removed Outlook 2007 completely? Any customization you made to Outlook setup.

Also I suggest you to setup new test machine with outlook 2010, add to domain and configure test profile. Check and share the results.

lruiz52

Check link below for possible solution;

http://demazter.wordpress.com/2010/02/09/outlook-continually-prompting-for-username-and-password-2/