OneNote For Mac OS Crashes 01

OneNote For Mac OS Crashes on Startup (Fixed)

Recently OneNote on my macbook pro started crashing every time on starting it. I couldn’t use one note at all. To fix the problem, I have followed these steps.

These steps worked for OneNote from MS Office 365 on macOS Sierra.

Steps for fixing “OneNote For Mac OS Crashes on Startup”

  1. Open Finder and select Go from the menu.
  2. At this stage you may not see the item Library in the drop down menu under GO.
  3. To make the Library menu visible, Press Option / alt key. Library menu will now visible.
  4. Select Library.
  5. In Library folder, go to Containers and delete the folder com.microsoft.onenote.mac (/Users/{{User Name}}/Library/Containers/com.microsoft.onenote.mac). OneNote For Mac OS Crashes 01
  6. Now go to ~/Library/Group Containers/UBF8T346G9.Office/ and delete just the OneNote folder. OneNote For Mac OS Crashes 02
  7. Restart the computer and start OneNote.

Hope this will fix the crashing of OneNote on your Mac.

NOTE: This fix will remove the temporary local files of OneNote. All your OneNote notebooks are synced with onedrive on cloud. So, once you log back in to OneNote, you will retain all your synced data. But, in case if you have not synced the notebooks for long time, then you will lose the unsynchronised data.

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26 thoughts on “OneNote For Mac OS Crashes on Startup (Fixed)”

  1. I had the same issue with OneNote, after migratie to a new macbook with TimeMachine. On Mac Catalina

    This worked: follow the steps mentioned above, with one exception:
    don’t delete this entire folder ~/Library/Group/Containers/UBF8T346G9.Office
    instead delete only this subfolder
    ~/Library/Group/Containers/UBF8T346G9.Office/OneNote

    Worked perfectly for me. No lost folders anywhere. OneNote opened the as it should.

    Reply
  2. My bad, my note were not synced and it seems Ive lost my notes.. Is there a way to get the lost data back ?

    Reply
  3. Tried a bunch of google searches to fix this. Yours was the only one I worked plus it was simplicity itself to follow your steps. Thank you! Thank you! Thank you!

    Reply
  4. Be careful! This erases everything you have on OneNote that has not been synchronized, so if you have synchronization issues and haven’t synchronized in a few weeks, you will lose everything that is not on the cloud.

    Reply
      • This fix will remove the temporary local files of one note. All your one note notebooks are synced with onedrive. So once you log back in to one note, you will retain all your synced data. But, as Manuel Zapata mentioned, if you have not synced the notebooks for long time, then you will loose the unsynced data.

  5. Yay a “fix” that actually worked… not my first rodeo on this :-)) OneNote was working perfectly well on my trusty MBP 2011 (after a few bumps) replaced it with a MBP 2016 – restored from Time Machine and …. OneNote didn’t work. Your fix DID Thanks so much

    Reply
  6. This worked for me. Thank you so much! I purchased a new MacBook Pro and immediately the OneNote app crashed. This solved the problem.

    Reply

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