OneDrive File Issues

How to Fix Word and Excel Files Showing 404 File Not Found in OneDrive

Maira Mehtab Sep 27, 2026 869 views

Question details

Users are unable to open Microsoft files such as Word and Excel in OneDrive, encountering a black screen accompanied by a 404 File Not Found error.

Product: Microsoft OneDrive
Device & OS: Windows
Scenario: Attempting to open stored Microsoft Office documents from OneDrive.
Observed behavior: Document files display a 404 File Not Found error and a black screen when clicked, whereas image files like PNGs in the same folder continue to open normally.

Before you start

Do not delete, move, or rename the affected files while troubleshooting, as doing so may cause permanent data loss or complicate the recovery process.

Solution 1Recommended

Verify File Availability and Account Status on OneDrive Web

Ensure your files are still intact and that you are signed in with the correct Microsoft account to prevent permission-based 404 errors.

Often, 404 errors occur when there is a mismatch between the cached login credentials and the active Microsoft session.

Access OneDrive Web

Open your web browser and navigate directly to OneDrive.com.

Check the signed-in account

Verify that the account currently signed in is the exact Microsoft account associated with the files you are trying to open.

Locate the files manually

Browse through your online folders to locate the affected Word or Excel files and attempt to open them directly from the web interface.

Important: If the files open normally on the web, the issue is likely localized to your desktop sync or application cache.

Solution 2

Launch Office Applications Directly from Windows Search

Bypass OneDrive integration errors by opening the Word or Excel desktop app first, then accessing the file from within the software.

Solution 3

Clear Browser Cache and Check Network Settings

Intermittent blocked-request messages and 404 errors can be resolved by clearing corrupted cache and checking for network or security software interference.

Free Microsoft Office alternative

Avoid Cloud Sync Errors with WPS Office

If OneDrive and Microsoft 365 frequently disrupt your workflow with sync issues and 404 errors, switch to WPS Office. It provides a stable, offline-first experience with seamless compatibility for all your Microsoft documents, entirely free.

1. Download WPS Office: Visit the official WPS website and download the free installation package.
2. Install the software: Run the installer and follow the quick setup instructions on your Windows PC.
3. Open your files flawlessly: Right-click your previously inaccessible Word or Excel files and select 'Open with WPS Office' to edit them locally.

Fully compatible with Microsoft Office formats including .docx, .xlsx, and .pptxStable offline functionality with no dependency on unstable cloud sync servicesLightweight architecture ensuring fast loading and smooth editingFamiliar, easy-to-use interface that requires zero learning curve

Frequently Asked Questions

Why do PNG files open normally while Word and Excel files show a 404 error in OneDrive?

Office documents (Word, Excel) rely on specific Microsoft 365 cloud services and account authentication to open and edit in the browser. Image files like PNGs are static and do not require these complex service interactions, making them immune to Office-specific server or account errors.

Will deleting and re-uploading the file fix the 404 File Not Found error?

No, you should never delete, move, or rename a file that is showing this error. Because the error often stems from an account or sync glitch, deleting the file could result in permanent data loss.

How can I check if OneDrive is experiencing a server outage?

You can check the operational status of OneDrive by visiting the official Microsoft Service Health portal or their official X (formerly Twitter) support handles. If there is a reported outage, you will need to wait for Microsoft to resolve the issue on their end.

Can my browser settings cause OneDrive to display a black screen?

Yes. Outdated browser cache, corrupted cookies, or aggressive ad-blocking and privacy extensions can interfere with OneDrive's ability to fetch the file viewer, resulting in a black screen or a blocked request message.

Document & File Issues