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How are the users connecting? is this via outlook anywhere?<br />
also when you get the prompt box, where is it trying to auth. to? it's in the top bar.
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yes its via outlook anywhere, &nbsp;yes its in the top bar
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I had migrated exchange 2007 server to exchange 2010 with DAG,when outlook is configured in cached mode, outlook prompts for user credentials every now and then.if i remove the cache mode then its fine, this issue is for all the users.
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I had migrated exchange 2007 server to exchange 2010 with DAG,when outlook is configured in cached mode, outlook prompts for user credentials every now and then.if i remove the cache mode then its fine, this issue is for all the users.

Outlook 2007/2010 prompting for passwords

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

Microsoft Office is an integrated suite of applications that includes Outlook, Word, Excel, Access, PowerPoint, Visio and InfoPath, along with a number of tools to assist in making the individual components work together. Coding within and between the projects is done in Visual Basic for Applications, known as VBA.