Windows Explored

Everyday Windows Desktop Support, Advanced Troubleshooting & Other OS Tidbits

Outlook Crashes & Outllib.dll

Posted by William Diaz on March 2, 2011

I have seen many an Outlook crash in the desktop support role. Often times, if you go into the Windows Event Viewer and look in the Application logs you will see a corresponding error for Microsoft Office. If you look at the details, you might see that it will point to outllib.dll as the faulting module:
Often times, this error is being caused by outcmd.dat, the file that stores your toolbar custom settings in Outlook. To see if this resolves the problem with Outlook crashing, close Outlook and go to C:\Documents and Settings\username\Application Data\Microsoft\Outlook and delete this file. Since the crashes can be random, monitor for the problem before assuming it has been corrected. A telltale sign that this file is causing the problem is to check its size. A normal outcmd.dat is between 10-20 kb and anything larger than 100kb should be suspect.


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