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I am running Outlook 2010 on Windows 7 Pro x64 on a domain. Outlook is connecting to exchange, and the username and password should be pulled from my logon credentials.

The problem is, about every few hours, outlook "forgets" what my password is. In the taskbar, a caution triangle appears, and in the bottom right hand corner of exchange, a "Needs Password" replaces "Connected to Microsoft Exchange." Simply clicking "Needs Password" fixes the issue, and new messages are downloaded.

What could the issue be? What could be timing out?

Edit: Also, at times the following window appears:

enter image description here

This is my Security Settings

enter image description here

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Wonderful! Microsoft has increased security by forgetting passwords! Innovation! On a totally almost related note: Does the time duration/frequency of Outlook's forgetfulness coincide in any way with possible DHCP settings? Specifically, the lease duration and expiration time? – lornix Jul 8 '12 at 12:34
dont believe so. Im on about 2.5 day leases, and I forget password a lot more often than that. – Cameron Aziz Jul 8 '12 at 13:30
This last time it remembered for about 5 minutes. – Cameron Aziz Jul 8 '12 at 13:37
Hmmm, Outlook Alzheimers? Doesn't look good! – lornix Jul 8 '12 at 13:56

Have you tried recreating your outlook profile? That's usually my first step with Outlook glitches: it's often down to corruption in the profile.

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