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on the run command line type a command <br />
control keymgr.dll and see if there is any cached information if so do remove and verify.
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on the run command line type a command
control keymgr.dll and see if there is any cached information if so do remove and verify.

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Also since when has this problem started comming. Any updates or changes at that time.
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Also since when has this problem started comming. Any updates or changes at that time.

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When modifying user properties on the Exchange server I'm reciveing the error. <br />
Exchange Extension has encountered a problem and needs to close. It immedaitely closed the MMC.<br />
I'm also recieving a Event ID referring to Faulting application maildsmx.dll<br />
<br />
Any ideas on how to clear this? I'm running into a brick wall
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When modifying user properties on the Exchange server I'm reciveing the error. 
Exchange Extension has encountered a problem and needs to close. It immedaitely closed the MMC.
I'm also recieving a Event ID referring to Faulting application maildsmx.dll

Any ideas on how to clear this? I'm running into a brick wall

Exchange MMC Crashing

Active Directory (AD) is a Microsoft brand for identity-related capabilities. In the on-premises world, Windows Server AD provides a set of identity capabilities and services, and is hugely popular (88% of Fortune 1000 and 95% of enterprises use AD). This topic includes all things Active Directory including DNS, Group Policy, DFS, troubleshooting, ADFS, and all other topics under the Microsoft AD and identity umbrella.

Active Directory

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.