Microsoft Security Patch Causes Outlook Crash

Microsoft recently deployed a security patch which has unexpected side effects for Outlook users.  Patch KB3097877, first deployed on Tuesday November 10, 2015, inadvertently causes Microsoft Outlook to crash upon launch or when opening/responding to email.   This symptom has been observed in Outloook 2010 and 2013, on machines running Windows 7, Windows 8, and Windows 8.1.

Tier1Net has already updated its automated patch management policy to scan for, and remove, Patch KB3097877 on all systems.

If you are experiencing any Outlook issues now however, please call our office immediately and we will expedite the patch removal on your workstation.

If you would prefer to remove the patch yourself, please following these instructions:

  1. Click Start and navigate to Control Panel > Uninstall a Program.
  2. Select “Installed Updates” and enter KB3097877 in the Search Field.
  3. If the update is found, select it and click Uninstall.
  4. Reboot the PC when prompted.

For further reading, please see below:



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