Microsoft Outlook App for Mac continues to shut down after a few seconds

Hi watereddown,

Thanks for contacting Apple Support Communities!

We understand that Microsoft unexpectedly quits while you're attempting to use it.

This is a great resource which will show you how to troubleshoot an app that won't open on your Mac: If an app on your Mac stops responding, closes unexpectedly, or won’t open - Apple Support

"1. Quit and reopen the app

Quit the app, then open it again. If the app won't quit, force the app to quit. Then check to see if the problem with the app is fixed.

2. Restart your Mac

Restart your Mac. Then check to see if the problem with the app is fixed.

3. Check for updates

To see if updates are available for the app, open the App Store, then click Updates. If updates aren't available for the app, update the software on your Mac. Or if you didn't get the app from the App Store, look for updates to the app on the app developer's website. Then check to see if the problem with the app is fixed.

4. Reinstall the app

Delete the app. When you do this, you might lose data that was stored in the app. Then redownload the app. If you didn't get the app from the App Store, redownload the app on the app developer's website. Then check to see if the problem with the app is fixed.

Get more help

• If you found the app on the App Store, contact the app developer. If the app is made by Apple or came with your Mac, or if the App Store itself is not responding, contact Apple Support.
• If you bought the app recently and you no longer want it, you can also request a refund."

We hope this helps you.

Kind regards.

I managed to fix this on my Macbook by completing the following:

Moving the Outlook application to the bin.

Clear all Outlook caches by moving them to the bin (or in terminal by rm -dr)

~/Library/Containers/com.Microsoft.Outlook/Data/Library/Caches

~/Library/Containers/com.Microsoft.Outlook/Data/Library/Application Support/Microsoft/Office/16.0/Wef

Clear profile - (find it and move it to the bin mine was called "Main Profile" yours may be in a different folder higher up, I'm guessing 'UBF8T346G9' is randomly generated)

~/Library/Group Containers/UBF8T346G9.Office/Outlook/Outlook 15 Profiles/

Re-install Office from https://portal.office.com/account/?ref=MeControl#

WARNING! This is deleting data - if your mail is not backed up on Office365 you won't be able to get it back again!