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 (/Users/{{User Name}}/Library/Containers/ 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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24 comments for “OneNote For Mac OS Crashes on Startup (Fixed)

  1. Prathap Bellur Nandakumar
    May 7, 2019 at 10:50 pm

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

    • May 9, 2019 at 1:06 pm

      Hi Prathap,
      Oh no. There is no way to retain the un-sysnced notes.

  2. Mar 21, 2019 at 1:40 am

    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!

  3. Tori T
    Mar 6, 2019 at 8:28 am

    This worked for me running macOS Mojave 10.14.3, thank you so much!!

  4. Mar 2, 2019 at 3:05 am

    Absolutely brilliant Beaulin!!
    Worked 1st time on my iMac running Mojave version 10.14.3.
    Thank you.

    • Mar 2, 2019 at 8:40 am

      Hello Mr Frank,
      I’m glad this article helped you.
      Thank you.

  5. Rick
    Nov 8, 2018 at 3:01 pm

    Worked great – thank you

  6. Karsten
    Oct 4, 2018 at 1:00 pm

    Thanks, worked as expected. The issue occurred after a MacOS recovery.

  7. Mark Withycombe
    Aug 24, 2018 at 10:10 pm

    Thank you!!!!

  8. Vera
    Aug 22, 2018 at 12:10 am

    honestly thank u so so so so so so so muuuch, not even the microsoft help-pages could help me

  9. Manuel Zapata
    Aug 2, 2018 at 6:50 pm

    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.

  10. Jon
    May 5, 2018 at 2:56 am

    Does this remove any data that was in OneNote prior to crashing?
    Or just “repair” the executable file?

  11. Oleg
    Mar 14, 2018 at 9:41 pm

    Voila. A solution that works. mac High Sierra 10.13.3

    • Jon
      May 5, 2018 at 2:59 am

      Does this leave intact any data that was previously in OneNote?

      • Aug 2, 2018 at 5:21 pm

        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.

  12. Donna
    Dec 15, 2017 at 6:37 am

    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

    • Dec 15, 2017 at 9:50 am

      Hi Donna,
      You are welcome. Great to know this helped you.

  13. Dec 12, 2017 at 8:45 pm


  14. Dixon
    May 5, 2017 at 7:26 pm

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

      Nov 8, 2017 at 5:12 pm

      +1 – worked for me! Thanks.

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