OneDrive File Issues

Fix Microsoft 365 Mobile App Cannot Access Personal Excel Files

Olivia Miller Oct 9, 2026 869 views

Question details

The user is unable to open personal Excel workbooks in the Microsoft 365 mobile app due to a generic access error, although shared files open normally and personal files remain accessible via a computer.

Fix Microsoft 365 Mobile App Cannot Access Personal Excel Files

Product: Microsoft 365 Mobile App
Device & OS: not provided
Scenario: Attempting to open and edit personal Excel spreadsheets saved on OneDrive using the Microsoft 365 mobile application.
Observed behavior: The application displays a generic access error when opening personal workbooks. Reinstalling the app or recreating the files only temporarily resolves the issue, while shared files are unaffected.

Before you start

Before troubleshooting, ensure you have a stable internet connection and that the affected Excel files are not currently opened, editing, or locked on another device like your desktop computer.

Solution 1Recommended

Clear App Cache and Update the Microsoft 365 App

Clearing the app's cache and ensuring you have the latest version installed often resolves temporary glitches causing access errors for personal files.

Mobile apps accumulate temporary data that can become corrupted over time, especially when managing synced cloud files. Clearing this cache forces the app to pull fresh data from your OneDrive.

Check for updates

Open the Google Play Store (Android) or Apple App Store (iOS), search for 'Microsoft 365', and tap 'Update' if a newer version is available.

Clear app cache (Android)

Go to your device's Settings menu, select 'Apps' or 'App Management', find 'Microsoft 365', tap on 'Storage', and select 'Clear Cache'.

Offload app (iOS)

Go to Settings > General > iPhone Storage, find the 'Microsoft 365' app, and tap 'Offload App' to clear temporary data while keeping your documents intact.

Restart the application

Close the Microsoft 365 app completely from your recent apps menu, reopen it, and attempt to access your personal Excel files again.

Clear App Cache and Update the Microsoft 365 App

Data Safety: Clearing the cache or offloading the app will not delete your actual Excel files, as they are safely stored in your OneDrive cloud account.

Solution 2

Re-authenticate and Verify OneDrive Synchronization

Authentication issues or incomplete OneDrive synchronization can prevent personal files from opening correctly on mobile.

Free Microsoft Office alternative

Use WPS Office to Access Your Excel Files Anywhere

If the Microsoft 365 mobile app continues to block access to your personal workbooks, WPS Office provides a reliable, lightweight alternative. It offers full compatibility with Microsoft formats and connects seamlessly to your cloud storage so you can keep working without interruption.

1. Download WPS Office: Install WPS Office for free from your device's application store.
2. Connect your OneDrive: Open WPS Office, navigate to the 'Open' tab, select 'Add Cloud Storage', and log in to your OneDrive account.
3. Open your personal files: Browse your OneDrive folders directly within WPS Office to open, view, and edit your personal Excel workbooks.

Fully compatible with Microsoft Excel formats (.xlsx, .xls) ensuring no loss of formatting.Seamlessly connects to cloud storage services including OneDrive, Google Drive, and Dropbox.Lightweight mobile application that opens complex personal workbooks quickly and reliably.Free and intuitive interface for on-the-go spreadsheet editing and viewing.

microsoft office alternative - wps office

Frequently Asked Questions

Why can I open shared Excel files but not my personal ones on the mobile app?

Shared files often rely on different permission tokens or SharePoint links, while personal files are directly tied to your local OneDrive sync cache. If your app's local authentication token or cache becomes corrupted, only your personal files might be restricted.

Does reinstalling the Microsoft 365 app delete my personal Excel files?

No, reinstalling the app does not delete your files as long as they are saved and synced to OneDrive or another cloud storage service. However, any locally saved offline drafts that haven't synced to the cloud yet may be lost.

How can I check if my Excel file is locked on another device?

Open the file on your computer or through Excel for the Web. If it is locked, you will see a notification banner indicating that the file is 'In Use' or 'Locked for editing' by another session. Close the file on your computer to unlock it for your mobile app.

Document & File Issues