Outlook requests Exchange Password, why?

5 pts.
Tags:
Exchange 2003
Exchange 2003 authentication
Exchange permissions
Outlook
Outlook permissions
We have Exchange 2003 and Outlook 2007 clients. We have been set up this way for almost nine months now, suddenly last week some of our users have been getting prompted for their Exchange username and passwords and in no particualar pattern. Somedays users X,Y, and Z need to input their credentials and other days they are fine and it's A, B, and C that need the credentials. What would cause this to happen all of the sudden? Our Exchange server is also our DC, and so far there hasn't been any issues with authentication into the domain.
ASKED: February 25, 2009  3:22 PM
UPDATED: February 26, 2009  2:31 PM

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I am sure, or hope, you are aware that installing Exchange on a Domain Controller is not recommended. This could be the root of the problem, but I would get on a call with Microsoft support to verify it. Here is an <a href=”http://rhymeswithgeek.com/blogs/someone_else/archive/2006/01/04/2029.aspx”>excellent article</a> about why it is not recommended to install Exchange on a Domain Controller to start with.
I would check your event logs and look for errors pertaining to authentication. Plus you have not said whether any recent updates were applied to either Exchange or the DC, or any changes were made at all. MS can help you sort this one out, it is too complicated a question I think for a good answer here.

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  • Dwiebesick
    How many exchange client licenses do you have compaired to the number of users?
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