User profile for user: kimccwc
kimccwc Author
User level: Level 1
8 points

Outlook 365 won't open since upgrading to OS Catalina 10.15.5

Hi, does anyone have a solution for outlook 365 refusing to open after upgrading to Catalina 10.15.5?

So far have tried the following without success:

  • Created new default outlook profile - no change, existing profile not corrupted
  • Moved plist files to bin - no change, still wouldn't open
  • Checked font manager - no new font manager since April this year so not the cause
  • Created new Mac profile, installed autoupdater again and ran updates, still wouldn't open
  • Deleted any MS Office or Outlook keychains - still wouldn't open
  • 2.5hrs online with Microsoft support who then said they couldn't resolve


All other MS Office programs up to date and working fine.

All. help much appreciated. Thank you

MacBook Pro 13″, macOS 10.15

Posted on Jun 17, 2020 8:37 PM

Reply
Question marked as Top-ranking reply
User profile for user: steve626
steve626
User level: Level 6
15,809 points

Posted on Jun 17, 2020 8:54 PM

The usual solutions to this problem involve font problems, plist corruption, or a damaged profile. It seems that you have already eliminated those possibilities. So the next step would be to completely uninstall Office 365, restart your Mac, and log into the Office 365 portal and download and install a fresh new version. The complete uninstall takes longer than the reinstall because the uninstall requires some manual steps.


Here is a link with instructions for completely uninstalling Office 365. https://answers.microsoft.com/en-us/msoffice/forum/all/mac-outlook-2016-1632-wont-open-on-catalina-10152/96ebae40-cfd5-44cc-97d5-45f20a7adb94


You need to not only put the program files in the Trash and empty it, but you have to remove a number of other related Office files. The link includes another link with explicit instructions. Others who had your problem and who followed those instructions completely had their issue resolved (the instructions from a Microsoft employee were marked as "solved" so they did work for someone).

View in context

Similar questions

1 reply
Question marked as Top-ranking reply
User profile for user: steve626
steve626
User level: Level 6
15,809 points

Jun 17, 2020 8:54 PM in response to kimccwc

The usual solutions to this problem involve font problems, plist corruption, or a damaged profile. It seems that you have already eliminated those possibilities. So the next step would be to completely uninstall Office 365, restart your Mac, and log into the Office 365 portal and download and install a fresh new version. The complete uninstall takes longer than the reinstall because the uninstall requires some manual steps.


Here is a link with instructions for completely uninstalling Office 365. https://answers.microsoft.com/en-us/msoffice/forum/all/mac-outlook-2016-1632-wont-open-on-catalina-10152/96ebae40-cfd5-44cc-97d5-45f20a7adb94


You need to not only put the program files in the Trash and empty it, but you have to remove a number of other related Office files. The link includes another link with explicit instructions. Others who had your problem and who followed those instructions completely had their issue resolved (the instructions from a Microsoft employee were marked as "solved" so they did work for someone).

Reply

This thread has been closed by the system or the community team. You may vote for any posts you find helpful, or search the Community for additional answers.

Outlook 365 won't open since upgrading to OS Catalina 10.15.5

Welcome to Apple Support Community
A forum where Apple customers help each other with their products. Get started with your Apple Account.
Learn more Sign up