I've been experiencing an issue with Word and Excel from Office 365 crashing upon startup after the latest update. In the event log, Excel shows error code 0xc00000374, while Word displays 0xc0000005 with a faulting module named ms098win32client.dll. Interestingly, both applications work perfectly in Safe Mode. I've also tried disabling all add-ins with a test user, but the problem persists. Has anyone encountered a similar situation or have any insights on what could be triggering these crashes?
3 Answers
Is there any chance an antivirus or endpoint detection and response (EDR) software is causing this? I've had similar issues with other applications crashing. Also, are you sure your Office version is up to date? Some updates have been problematic, and if you haven't already, consider uninstalling KB5074109, as it has given some users trouble.
I've faced a similar issue before; it was related to the default document template in Word. I replaced it with a working version, and that fixed it for me. Just a thought! If that doesn't help, you might want to use Process Monitor to dig deeper into what's happening when the apps crash.
Sounds like Office is throwing a tantrum. You might try a quick repair option first. If that doesn't work, a full uninstall and reinstall could do the trick. Safe Mode usually indicates a problem in the normal startup path, possibly an add-in or something else loading incorrectly.
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