Microsoft Outlook Application Crash due to UCRTBASE.DLL

Anonymous
2020-12-07T17:43:25+00:00

Windows 10 Build 2004

Outlook crashes intermittently and generates the following Application Event Log error.

Event 1000, Application Error (11:06AM, 12/7/2020) Faulting application name: OUTLOOK.EXE, version: 16.0.13426.20308, time stamp: 0x5fc6ea9b Faulting module name: ucrtbase.dll, version: 10.0.19041.546, time stamp: 0x73123758 Exception code: 0xc0000409 Fault offset: 0x0009edbb Faulting process id: 0x41c0 Faulting application start time: 0x01d6ccaedccaa9fa Faulting application path: C:\Program Files (x86)\Microsoft Office\root\Office16\OUTLOOK.EXE Faulting module path: C:\WINDOWS\System32\ucrtbase.dll Report Id: f8791f7b-faf7-452a-8ff2-7268662a6db2 Faulting package full name: Faulting package-relative application ID:

I have run SFC /SCANNOW

I have completely uninstalled and reinstalled Microsoft Office 365

Here are the properties of the failing file:

Windows for home | Windows 10 | Performance and system failures

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  1. Anonymous
    2021-01-22T11:59:10+00:00

    So far so good... Still no new crashes of Outlook within our organization.

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  2. Anonymous
    2021-01-21T21:08:36+00:00

    Today I added "Microsoft Outlook" as an exclusion to the Protected Applications list for Exploit Mitigation within Sophos Central.

    https://docs.sophos.com/central/Customer/help/en-us/central/Customer/common/tasks/ExploitExclusions.html

    So far so good.... 🤞

    Won't this disable Exploit Mitigation globally for your Sophos installs?  Sophos doesn't recommend disabling it when we looked on our side.

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  3. Anonymous
    2021-01-21T16:50:41+00:00

    Tomorrow I would love to know if this continued to help.   If you hear anything from Sophos in addition please let me know.

    Today I added "Microsoft Outlook" as an exclusion to the Protected Applications list for Exploit Mitigation within Sophos Central.

    https://docs.sophos.com/central/Customer/help/en-us/central/Customer/common/tasks/ExploitExclusions.html

    So far so good.... 🤞

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  4. Anonymous
    2021-01-21T15:44:15+00:00

    Today I added "Microsoft Outlook" as an exclusion to the Protected Applications list for Exploit Mitigation within Sophos Central.

    https://docs.sophos.com/central/Customer/help/en-us/central/Customer/common/tasks/ExploitExclusions.html

    So far so good.... 🤞

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  5. Anonymous
    2021-01-21T13:51:12+00:00

    Unfortunately, for me the Sophos hotfix did not prevent Outlook from crashing either.

    However, disabling the Exploit mitigation component did.

    I will provide Sophos my feedback.

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