OneNote crashing on iPad pro

Question

OneNote crashing on iPad pro

DJ 0

I have used OneNote on an iPad for years now and have never had an issue with it. Within the last week though, every time I hit the undo button it crashes the app on my iPad Pro. I have tried updating the app, clearing my cache, deleting and redownloading the app, and a few other things but nothing has worked. Would just like some help resolving this issue.

Mudassar Arshad 0 Reputation points

2026-10-13T06:16:56.7933333+00:00
Check whether the issue affects one notebook or all notebooks

This is the most useful next test.

Open OneNote and create a new, temporary notebook or page.

Type a few words, then tap Undo.

If OneNote crashes only in your existing notebook, the problem may be related to that notebook or its content.

If it crashes in a new notebook too, the issue is more likely related to the app or iPadOS.

2. Test OneNote in your browser

Open OneNote for the web and sign in with the same account.

Open the affected notebook and confirm your latest notes are present.

Try editing a temporary page and using Undo, if available.

If the web version works normally, that helps narrow the problem to the iPad app.

Check whether the issue affects one notebook or all notebooks

This is the most useful next test.

Open OneNote and create a new, temporary notebook or page.

Type a few words, then tap Undo.

If OneNote crashes only in your existing notebook, the problem may be related to that notebook or its content.

If it crashes in a new notebook too, the issue is more likely related to the app or iPadOS.

2. Test OneNote in your browser

Open OneNote for the web and sign in with the same account.

Open the affected notebook and confirm your latest notes are present.

Try editing a temporary page and using Undo, if available.

If the web version works normally, that helps narrow the problem to the iPad app.

2 answers

Your answer

Mudassar Arshad 0 Reputation points

2026-10-13T06:16:56.7933333+00:00

Check whether the issue affects one notebook or all notebooks

This is the most useful next test.

Open OneNote and create a new, temporary notebook or page.

Type a few words, then tap Undo.

If OneNote crashes only in your existing notebook, the problem may be related to that notebook or its content.

If it crashes in a new notebook too, the issue is more likely related to the app or iPadOS.

2. Test OneNote in your browser

Open OneNote for the web and sign in with the same account.

Open the affected notebook and confirm your latest notes are present.

Try editing a temporary page and using Undo, if available.

If the web version works normally, that helps narrow the problem to the iPad app.

Check whether the issue affects one notebook or all notebooks

This is the most useful next test.

Open OneNote and create a new, temporary notebook or page.

Type a few words, then tap Undo.

If OneNote crashes only in your existing notebook, the problem may be related to that notebook or its content.

If it crashes in a new notebook too, the issue is more likely related to the app or iPadOS.

2. Test OneNote in your browser

Open OneNote for the web and sign in with the same account.

Open the affected notebook and confirm your latest notes are present.

Try editing a temporary page and using Undo, if available.

If the web version works normally, that helps narrow the problem to the iPad app.

Answer 1

Xavier-D 13,885 Microsoft External Staff Moderator

Hello DJ,

Since OneNote crashes consistently when you select Undo, even after updating and reinstalling the app.

As a next step, please collect the crash information:

Open the iPad Settings app and select Apps > OneNote > Troubleshooting.
Note the Last Error ID and Last Error Version, if displayed.
If available, enable Logging for Customer Support, reproduce the crash once, and then disable logging again because it may affect app performance.

The you can contact Microsoft Support for further insight and assistance about this issue:

Please note that this is a user-to-user support forum. Moderators and contributors, including external Microsoft employees, are not allowed to directly interfere with Microsoft product features or access back-end systems. Our role is limited solely to providing technical guidance on reported incidents, requests, or ideas.

Open a website link - Contact - Microsoft Support
In the box below "We're here to help", type Microsoft 365, click "Get Help", and then click "Contact Support" below.
In this section, you will need to sign in to your Microsoft account.
Select "Microsoft 365 and Office" under Products & Services, select "Technical Support" as the category, and click to confirm
You can select " Chat with a support agent in your web browser " to access the chat window.

At this stage, there does not appear to be another confirmed user-side fix for this specific Undo crash. Please continue using the Eraser or OneNote for the web until an app update resolves it.

I hope you can get the support you need, have a nice day.

Xavier-D 13,885 Reputation points Microsoft External Staff Moderator

2026-10-13T23:50:15.4666667+00:00

Hi DJ

I’m following up to check on the status of this issue.

Have you had an opportunity to review the answer shared earlier?

Any update you can provide would be greatly appreciated.
DJ 0 Reputation points

2026-10-14T17:23:31.0133333+00:00

Hello,

I was unable to complete the above steps. Since I am on a school account, it says that I need to contact my system admin to have them talk to support. I’m not going to do that. I tried creating a new notebook and the same issue happened. I tried running OneNote on the browser version, it was slow but the undo button worked there so it seems to be just an issue with the app on my iPad
Xavier-D 13,885 Reputation points Microsoft External Staff Moderator

2026-10-15T02:00:24.54+00:00

Hi DJ

Thank you for responding

The fact that Undo crashes OneNote in a new notebook too, while working in the browser, confirms that the problem is isolated to the iPad app rather than your notebook content.

Unfortunately, as this is a community forum, we cannot investigate deeper the app logs or raise a support case for you. With a school account, that escalation must go through your school’s Microsoft 365 administrator.

If you prefer not to contact them, the remaining options are to use OneNote for the web for actions requiring Undo, avoid Undo in the iPad app, and report the reproducible crash through OneNote** > Settings > Send **Feedback.

Answer 2

Avoid Undo while in Draw mode for now and report the crash through OneNote, because a recent iPad Pro report describes the same repeatable Undo crash and no official fix or workaround has yet been published.^1^

Temporary workaround

Allow OneNote to finish syncing before drawing. Pull down the Notebooks list; wait until the spinning sync indicator disappears.^2^
Until an update fixes the regression, avoid the on-screen Undo button in Draw mode. If possible:
- Erase the unwanted ink with the Eraser tool instead.
- Make important edits through OneNote on another device or OneNote on the web.
After a crash, reopen the affected page and verify that its latest ink synced before adding more content. The matching report notes that recent markings can be lost after restarting.^1^

Report the reproducible crash

Since updating, clearing cache, and reinstalling have already failed, repeating them is unlikely to help this particular symptom.

In OneNote, open Settings → Send Feedback and include:

“OneNote crashes every time Undo is tapped”
Whether it occurs only under Draw, or also while typing
iPad Pro model
Settings → General → About → iPadOS Version
OneNote version shown in OneNote settings or the App Store
Whether it affects every notebook/page or only one
Approximate time of the latest crash

This in-app route sends the report to the OneNote team; it has also been recommended for recent iPad-specific OneNote defects.^3^

If the crash is limited to one large notebook or page

After confirming that everything is synchronized and accessible elsewhere:

Close notebooks that are not currently needed.
Reduce unusually large sections/pages or move a large section into another notebook.
Check iPad Settings → General → iPad Storage → OneNote and ensure the device has adequate free storage.

Microsoft documents these measures for OneNote responsiveness on iPad, particularly with large notebooks.^4^

The official recent-issues page does not currently document this specific Undo crash, so monitor it and the App Store for a subsequent OneNote update.^5^

References

OneNote crashing on iPad pro

Check whether the issue affects one notebook or all notebooks

2. Test OneNote in your browser

Check whether the issue affects one notebook or all notebooks

2. Test OneNote in your browser

2 answers

Temporary workaround

Report the reproducible crash

If the crash is limited to one large notebook or page

Your answer