OneDrive File Issues

Fix OneDrive Files Opening in Wrong Microsoft 365 Mobile App

Maira Mehtab Sep 22, 2026 868 views

Question details

The user needs to make Office documents saved in OneDrive automatically open in the dedicated Microsoft 365 mobile app instead of the basic OneDrive app viewer.

Product: OneDrive and Microsoft 365 Mobile Apps
Device & OS: not provided
Scenario: Opening Word, Excel, or PowerPoint files stored in a OneDrive account on a mobile device.
Observed behavior: Files persistently open in the OneDrive app viewer rather than the Microsoft 365 app, even after reinstalling apps, clearing caches, signing in again, and installing updates.

Before you start

Verify that both the OneDrive and Microsoft 365 mobile applications are updated to their latest versions and are signed in using the exact same Microsoft account.

Solution 1Recommended

Clear Default App and File Association Settings

Resetting the default app settings on your mobile device forces the system to ask you which app should handle Office documents, allowing you to select Microsoft 365.

Access Device App Settings

Open your mobile device's Settings menu and navigate to the Apps or App Management section.

Clear OneDrive Defaults

Locate and tap on the OneDrive app. Look for a setting named 'Open by default' or 'Set as default' and tap the option to clear existing defaults.

Check Microsoft 365 Associations

Return to the app list, select the Microsoft 365 app (or individual Word/Excel/PowerPoint apps), and ensure it is set to open supported links and files.

Solution 2

Manually Open the File in Another App

Use the manual sharing options within the OneDrive app to bypass the built-in viewer and route the document directly to the Microsoft 365 app.

Solution 3

Report the Issue to Microsoft Support

If standard troubleshooting fails across multiple devices, the issue might be a bug requiring an official fix from the support team.

Free Microsoft Office alternative

Avoid Mobile App Conflicts with WPS Office

If you are tired of files opening in the wrong app or struggling with fragmented Microsoft applications, WPS Office offers a seamless solution. It is a powerful, lightweight, all-in-one office suite that handles Word, Excel, PowerPoint, and PDF files natively in a single mobile application.

1. Download the App: Install WPS Office for free from your device's app store.
2. Connect Your Cloud: Open WPS Office, go to the 'Cloud' or 'Open' tab, select 'Add Cloud Storage', and log in to your OneDrive account.
3. Edit Seamlessly: Tap any OneDrive file directly within WPS Office to immediately open it in the built-in, fully-featured editor.

Fully compatible with Microsoft Office formats (.docx, .xlsx, .pptx) ensuring zero formatting loss.All-in-one application architecture eliminates the frustration of files opening in basic cloud viewers.Connects seamlessly to your OneDrive account so you can open, edit, and save files directly.Free to download, incredibly lightweight, and highly optimized for mobile productivity.

microsoft office alternative - wps office

Frequently Asked Questions

Why do my Office files open in read-only mode inside the OneDrive app?

The OneDrive mobile app includes a lightweight built-in file viewer designed for quick previews, which only supports read-only access. To edit the file, you must route it to a dedicated editing application like Microsoft 365 or WPS Office.

How do I clear default app settings on an Android device?

Navigate to your device Settings, select 'Apps' or 'Manage Apps', find the application (such as OneDrive) in the list, and tap 'Clear defaults' located under the 'Open by default' section.

Can I edit my OneDrive files on mobile without the Microsoft 365 app?

Yes. You can use alternative office suites like WPS Office. Simply link your OneDrive account within the alternative app or use the 'Open in another app' feature from OneDrive to select your preferred editor.

Document & File Issues