A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Based on similar iPad Pro issues with Microsoft 365 apps after recent updates, the problem is most likely in the current app build and not in the device configuration.
Try the following in order:
- Fully close and relaunch all Office apps
- Swipe up from the bottom, pause to show the app switcher, then swipe up on each Microsoft app (Excel, Word, PowerPoint, Outlook, Teams, OneNote) to close them.
- Reopen one app and test the PIN prompt again.
- Reset app sign‑in/credentials (for each affected app)
For OneNote (pattern is similar for other Office apps that expose Reset options):- Go to iOS Settings > OneNote.
- Under Reset OneNote, turn on Delete Sign‑In Credentials.
- Make sure OneNote is not running (close it from the app switcher).
- Reopen OneNote and sign in again.
Since Office apps share identity, repeat for any app that has a similar Reset / Delete Sign‑In Credentials toggle.
- Reset Office apps on iPad (where available)
For Word/Excel/PowerPoint on iPad:- Open Settings on the iPad.
- Scroll down and select Word, Excel, or PowerPoint.
- Under RESET, tap Reset <app name>.
- Enable Delete Login Credentials.
- Close the app from the app switcher and reopen it, then sign in and test the PIN prompt.
- Confirm the correct account and license
- Use a browser to sign in to Microsoft 365 and verify that the work account has an active Microsoft 365 license.
- If the license is missing or expired, contact the Microsoft 365 admin to assign or fix the license, as missing licenses can cause mobile apps to misbehave.
- Check for newer app updates
- Open the App Store, go to Updates, and install any newer versions of the Microsoft apps.
- Similar issues on iPad (Outlook not responding, Teams camera upside down, Excel becoming unusable) have been fixed by subsequent app updates.
- If still blocked, contact the organization’s IT/admin
- Because the PIN prompt is enforced by a company policy (likely Intune/Conditional Access), the admin may need to:
- Confirm that the latest app version is supported with iPadOS 26.4 and the current app protection policies.
- Check for any known issues with the latest Office builds on iPad Pro and deploy a fixed version or adjust policy if necessary.
- Because the PIN prompt is enforced by a company policy (likely Intune/Conditional Access), the admin may need to:
If none of the above resolves the issue and there is no newer build available, the remaining action is to work with the organization’s IT or Microsoft support, as this matches other cases where a new software update on iPad Pro temporarily broke Office functionality until Microsoft released a fix.
References:
- What you can do in the Microsoft 365 apps on mobile devices with a Microsoft 365 subscription
- Fixes or workarounds for recent issues in OneNote for Mac, iPhone, and iPad
- What Microsoft 365 business product or license do I have?
- Action Required: Evaluate and update Conditional Access policies after new iPadOS release
- I have been using Excel for IPad for over a year and suddenly it has stopped working. - Microsoft Q&A
- My Microsoft365 Office Package no longer works with my iPad Pro - Microsoft Q&A
- Outlook not working at all on iPad after update to V 5.2602.0 - Microsoft Q&A
- Ipad Pro M5 Teams Issue Upside Down Camera - Microsoft Q&A