Permission & Access Issues

Fix SharePoint Files Opening as Read-Only on One Computer

Emma BrownEmma Brown Oct 21, 2026 871 views

Question details

The user needs to fix an issue where SharePoint files (Word and Excel) are locked in read-only mode on one specific computer, despite working correctly on other devices.

Fix SharePoint Files Opening as Read-Only on One Computer
Product
Microsoft Office (Word, Excel), SharePoint
Device & OS
Windows
Scenario
Accessing and editing shared documents hosted on SharePoint via local Office desktop applications.
Observed behavior
Files open strictly as read-only on a single computer regardless of the account used, while the exact same files are fully editable on a colleague's computer.
Before you start

Ensure that your Office desktop applications are fully updated and verify that your account has the correct edit permissions for the SharePoint document library before making system-level changes.

Solution 1Recommended

Clear Stored Office Credentials in Windows

Removing corrupted local authentication data forces Microsoft Office to request fresh credentials from SharePoint, which typically resolves machine-specific read-only errors.

When local authentication tokens become corrupted, Office applications may fail to recognize your editing permissions, forcing files into read-only mode to prevent unauthorized changes.

1
Sign out of Office applications

Open Word or Excel, click on your profile picture or name at the top right corner, and select 'Sign out'. Close all running Office applications completely.

2
Open Credential Manager

Click on the Windows Start menu, type 'Credential Manager' into the search bar, and press Enter to launch the utility.

3
Remove Office credentials

Select the 'Windows Credentials' tab. Scroll down to the 'Generic Credentials' section, locate any entries starting with 'MicrosoftOffice', click the drop-down arrow next to them, and select 'Remove'.

4
Restart and sign back in

Restart your computer. Open Microsoft Word or Excel, click 'Sign in', and enter your Microsoft 365 credentials to re-authenticate with SharePoint.

Clear Stored Office Credentials in Windows
Authentication Refreshed: Clearing credentials safely resets your connection without deleting your actual documents or local files.
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Frequently Asked Questions

Why are my SharePoint files only opening in read-only mode on one computer?

This typically happens when the stored local Office credentials in your Windows Credential Manager become corrupted. Because the issue is isolated to the local authentication cache on that specific machine, the files will still open and function normally on other computers.

How do I know if the read-only issue is caused by SharePoint or my local computer?

If you can edit the file on a colleague's computer or by using the Office web browser apps, but it opens as read-only on your desktop, the problem lies with your local computer's Office installation or stored account credentials.

Can checking out a file in SharePoint prevent read-only errors?

Yes, but only if the library is configured to require it. If 'Require Check Out' is enabled in the SharePoint library settings, you must manually check out the file before editing. Otherwise, the file will open in read-only mode to prevent conflicting changes.