Permission & Access Issues

How to Stop the File-Locked Popup in Excel 365

Olivia Miller Oct 12, 2026 868 views

Question details

The user wants to permanently disable or resolve the file-locked notification popup in Excel 365.

Product: Excel 365
Device & OS: not provided
Scenario: Opening, editing, or collaborating on an Excel workbook that is stored locally or synchronized via cloud services.
Observed behavior: Excel repeatedly displays a large file-locked notification indicating the workbook is being edited or locked, often triggered by AutoSave, coauthoring, or synchronization processes.

Before you start

Before proceeding, ensure that the Excel file is not currently open on another device or by another user, and verify that your OneDrive or SharePoint synchronization has fully completed.

Solution 1Recommended

Disable AutoSave Globally in Excel Settings

This is a temporary workaround to stop the file-locked popup that is frequently triggered by background AutoSave actions.

By turning off the default AutoSave feature for cloud files, you prevent Excel from constantly pinging the server to lock the file for incremental updates. Note that this change applies globally to all workbooks.

Open Excel Options

Launch Excel, click on the 'File' menu in the top-left corner, and select 'Options' at the bottom of the navigation pane.

Navigate to Save Settings

In the Excel Options dialog box, click on the 'Save' tab located in the left-hand sidebar.

Disable AutoSave

Uncheck the box that says 'AutoSave OneDrive and SharePoint Online files by default on Excel'.

Restart Excel

Click 'OK' to save your changes, then completely close and restart Excel for the setting to take effect across all worksheets.

Disable AutoSave Globally in Excel Settings

Manual Saving Required: With AutoSave disabled, remember to manually save your progress frequently using Ctrl+S or the Save icon to prevent data loss.

Solution 2

Resolve Cloud Sync and File Permission Conflicts

If disabling AutoSave does not resolve the underlying lock, you must address potential synchronization stalls or permission issues directly.

Free Microsoft Office alternative

Try WPS Office for a Seamless Spreadsheet Experience

If you are tired of dealing with persistent file locks and synchronization popups in Excel 365, WPS Office offers a lightweight, hassle-free alternative. Enjoy smooth local editing and reliable file management without disruptive background notifications.

1. Download WPS Office: Visit the official WPS website and download the free WPS Office suite.
2. Install and Launch: Follow the on-screen instructions to install the software, then open WPS Spreadsheets.
3. Open Your Excel File: Click 'Open' and select your .xlsx file. You can now edit it seamlessly without encountering Office 365 file-lock popups.

Highly compatible with Microsoft Excel (.xlsx, .xls, .csv) formats without conversion.Lightweight architecture that runs smoothly without aggressive background syncing locks.Free to use with a familiar, easy-to-navigate user interface.Robust local saving options that give you full control over your workbooks.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel 365 keep saying my file is locked?

This usually happens when another user has the file open, a background process like OneDrive is still syncing the file, or Excel's AutoSave feature conflicts with cloud server updates.

Does turning off AutoSave permanently fix the locked file issue?

Disabling AutoSave acts as a workaround that stops frequent sync-related locks. However, if the file is genuinely locked by another user or stuck in a sync queue, you must resolve the sync issue directly.

How can I unlock an Excel file that is locked for editing?

Ensure no one else is editing the file, close Excel entirely (including checking Task Manager for ghost processes), wait a few minutes for server locks to clear, and then reopen the file.

Document & File Issues