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Can’t open Office apps?

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› General › Can’t open Office apps?

Last reviewed on May 31, 2021     3 Comments

Applies to: Outlook 365 (Win), Outlook 2019 (Win), Outlook 2016 (Win)

I'm somewhat surprised that we are still seeing a number of users affected by this bug as it was fixed several days ago. The issue? Some users are receiving an error message when they try to open any Office application:

"We're sorry, but Office App has run into an error that is preventing it from working correctly. Office App will need to be closed as a result. Would you like us to repair now?"

Repair is pointless and does not fix this problem. It’s a bug in current version, caused Microsoft Malware Protection Engine version 1.15700.*.

To fix, install definition updates for Windows Defender Antivirus and other Microsoft antimalware and restart the computer.

  1. Type ‘Check for Updates’ on the start menu
  2. Open ‘Check for Updates’ when it comes up.
  3. Click Check for Updates and install any that are found.
  4. Reboot the computer.

For more information see these articles:
Message when starting: PowerPoint has run into an error

Can’t open Office apps? was last modified: May 31st, 2021 by Diane Poremsky
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Related Posts:

  • Understanding Outlook 2013 Updates
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  • Outlook error: Something is wrong with your data files

About Diane Poremsky

A Microsoft Outlook Most Valuable Professional (MVP) since 1999, Diane is the author of several books, including Outlook 2013 Absolute Beginners Book. She also created video training CDs and online training classes for Microsoft Outlook. You can find her helping people online in Outlook Forums as well as in the Microsoft Answers and TechNet forums.

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chelsea (@guest_217294)
December 13, 2020 5:27 pm
#217294

the post i was referring to: https://answers.microsoft.com/en-us/msoffice/forum/all/how-do-i-install-office-365-on-mac-os-el-capitan/1262f69a-17a0-49aa-a03b-04cc21572866

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chelsea (@guest_217293)
December 13, 2020 5:26 pm
#217293

thank you for your post on office and el capitan. my office suite suddenly stopped working, i cannot upgrade OS bc laptop is too old. the link you posted . . . thank you, i am going to try it. should i also disable any updates or something?

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Diane Poremsky(@diane-poremsky)
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Reply to  chelsea
December 16, 2020 10:33 pm
#217311

Updates shouldn't be offered - but just to be safe, disable updates.

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