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Can you confirm your actual setup please.<br />
Are ou are using exchange 2003,2007 or 2010 with Outlook 20xx on a local network where al the PC's are in the domain. <br />
Outlook should normaly use integrated authentication so shouldnt need any additional credentials. It may be a problem with the domain controller not processing the authentication requests from exchange. <br />
<br />
Is this affecting every user or just a small group ? 
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Good morning,<br />
Im getting several users complaining that when they open Outlook they are being prompted for a username and password, but the username is wrong. When they click the down arrow next to username they can select there proper username. I cannot find anywhere where I change the default usename, any ideas where it is?<br />
<br />
Thank you
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Good morning,
Im getting several users complaining that when they open Outlook they are being prompted for a username and password, but the username is wrong. When they click the down arrow next to username they can select there proper username. I cannot find anywhere where I change the default usename, any ideas where it is?

Thank you

Wrong Username

Exchange is the server side of a collaborative application product that is part of the Microsoft Server infrastructure. Exchange's major features include email, calendaring, contacts and tasks, support for mobile and web-based access to information, and support for data storage.

Exchange

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