OneDrive for Business Word AutoSave opens read-only for shared presentations: Fix Guide

When you open a shared Word presentation that is stored in OneDrive for Business, AutoSave may fail and the file opens in read-only mode. This prevents you from editing the document and forces you to save a local copy. The root cause is often a conflict between the file’s co-authoring metadata and the OneDrive sync state, a misconfigured library setting, or a cached Office file that has become stale. This article explains why the problem occurs and provides step-by-step fixes to restore AutoSave and editing capabilities for shared presentations.

Why AutoSave Opens Shared Word Presentations in Read-Only Mode

AutoSave in Word for Microsoft 365 relies on the file being in a co-authoring state. When you open a shared presentation, Word checks the file’s metadata on OneDrive to determine if it can write changes. If the metadata indicates that another user has the file locked, or if the local sync cache is out of date, Word falls back to read-only mode.

The most common technical cause is a stale Office File Cache. Office stores a local copy of the file in a hidden cache folder. If this cache becomes corrupted or contains an old version that the server no longer recognizes, Word cannot establish a write session. Another frequent cause is the SharePoint “Require Check Out” library setting. When enabled, this setting forces users to check out a file before editing, which conflicts with AutoSave’s real-time co-authoring model. Finally, a temporary network interruption or OneDrive sync pause can leave the file in a “locked” state on the server, causing Word to open it as read-only.

Step-by-Step Fixes for AutoSave Read-Only Issues in Shared Presentations

Apply these fixes in the order shown. Test AutoSave after each step before moving to the next.

1. Close Word and restart OneDrive sync
   Right-click the OneDrive cloud icon in the system tray. Select Pause syncing and choose 2 hours. Wait 10 seconds, then click the OneDrive icon again and select Resume syncing. This clears temporary sync locks that can cause Word to see the file as unavailable for editing.
2. Clear the Office File Cache
   Close Word and all other Office apps. Press Windows key + R, type %localappdata%\Microsoft\Office\16.0\OfficeFileCache, and press Enter. Delete all files inside the OfficeFileCache folder. Restart Word and open the presentation again. Word rebuilds the cache from the server version.
3. Check the SharePoint library’s Require Check Out setting
   Open the SharePoint document library that contains the presentation in a web browser. Click the gear icon and select Library settings. Under General Settings, click Versioning settings. Locate Require Check Out and ensure it is set to No. Click OK. This setting overrides AutoSave because checked-out files cannot be co-authored in real time.
4. Resolve any pending file conflicts
   In Word, go to File > Info. If you see a yellow banner that says “Resolve Conflicts,” click it. The Conflict Resolution pane shows any unresolved changes from a previous editing session. Accept or reject the changes, then save the file. This clears the conflict metadata that forces read-only mode.
5. Disable and re-enable AutoSave
   Open the presentation in Word. Toggle the AutoSave switch at the top-left corner of the window to Off. Wait 5 seconds, then toggle it back to On. This forces Word to renegotiate the co-authoring session with OneDrive.
6. Repair Office installation
   Open Control Panel and select Programs and Features. Find Microsoft 365 in the list, right-click it, and choose Change. Select Quick Repair and follow the prompts. If the problem persists, run an Online Repair from the same menu. This fixes corrupted Office components that may prevent AutoSave from working.

If AutoSave Still Opens the Presentation as Read-Only

OneDrive shows a red X on the file

A red X means the file failed to sync. Right-click the OneDrive icon and choose View sync problems. The sync activity center shows the specific error. Common fixes include renaming the file to remove unsupported characters or moving it to a folder that is not excluded from sync.

Word says “This file is locked by another user”

If the presentation is stored in a SharePoint library that has Require Check Out enabled, the lock message is expected. Disable Require Check Out using the steps in the main fix list. If the library requires check-out for compliance reasons, users must manually check out the file before editing and check it in after saving. AutoSave will not work under this configuration.

AutoSave is grayed out entirely

AutoSave is only available for files saved to OneDrive or SharePoint. If the file is stored on a local drive or a network share, AutoSave is disabled. Save the file to OneDrive using File > Save As > OneDrive. Also verify that the file format is .docx — older .doc files do not support AutoSave.

Co-authoring shows multiple people but changes are not visible

This usually means the file opened from a shared link that grants view-only permissions. The sender must share the file with Can edit permissions. In OneDrive, right-click the file, select Share, and set the permission level to Can edit. Recipients must open the file from the shared link while signed in with the same Microsoft 365 account.

Item	Read-Only (Locked)	Read-Only (No Permission)
Description	File is checked out or locked by another user or sync process	User does not have edit permissions on the file or library
Typical symptom	AutoSave toggle is off and cannot be turned on	Word opens file with “Read-Only” in the title bar but AutoSave toggle is gray
Primary fix	Disable Require Check Out in SharePoint library settings	Share the file with Can edit permission or grant Contribute access in SharePoint
Secondary fix	Clear Office File Cache and resume OneDrive sync	Have the file owner re-share the link with edit permissions

You can now identify the exact cause of read-only mode for shared Word presentations and apply the correct fix. Start by checking the SharePoint library’s Require Check Out setting, as this is the most common block for AutoSave. After resolving the issue, test co-authoring by having two users edit the same presentation simultaneously. As an advanced tip, use the File > Info > Manage Document menu to check for any unresolved merge conflicts that may reappear after the fix.