OneDrive File Issues

Fix OneDrive AutoSave Website Security Certificate Errors in Microsoft 365

Maira Mehtab Sep 28, 2026 869 views

Question details

Users are encountering a website security certificate warning that blocks OneDrive AutoSave from saving documents.

How to Fix OneDrive AutoSave Website Security Certificate Errors

Product: OneDrive / Microsoft 365
Device & OS: not provided
Scenario: Attempting to edit and automatically save a document to OneDrive using the AutoSave feature.
Observed behavior: AutoSave fails to upload changes to the cloud and prompts the user with a website security certificate error.

Before you start

Before diagnosing the network or certificate issue, immediately save a local copy of your document to prevent any data loss while AutoSave is inactive.

Solution 1Recommended

Synchronize System Date and Time Settings

An incorrect system clock is the most common cause of security certificate validation failures between your computer and Microsoft servers.

Website security certificates rely on strict timeframes to validate their authenticity. If your computer's clock is even slightly out of sync with global time servers, the connection to OneDrive will be flagged as insecure.

Save locally

Click 'File' > 'Save As' and choose a folder on your local computer to secure your recent edits.

Access Date & Time

Right-click the clock in your Windows taskbar and select 'Adjust date/time' from the context menu.

Sync clock automatically

Toggle on the switch for 'Set time automatically', then click the 'Sync now' button under the Synchronize your clock section.

Restart applications

Close your web browser or Microsoft Office applications entirely, reopen your document, and verify if AutoSave resumes.

Synchronize System Date and Time Settings

Data Protected: Manually saving a local copy first guarantees your work is safe even if the connection to OneDrive drops permanently during troubleshooting.

Solution 2

Bypass Network Interception or Antivirus Software

Third-party network security tools or VPNs may intercept the secure connection to OneDrive, triggering a false certificate error.

Free Microsoft Office alternative

Try WPS Office for Reliable Cloud Syncing

If Microsoft 365 AutoSave continues to fail due to stubborn certificate or network errors, consider switching to WPS Office. It provides a lightweight, seamless alternative with its own built-in WPS Cloud service, ensuring your documents are automatically saved without complex network security conflicts.

1. Install WPS Office: Download and install the free WPS Office suite on your device.
2. Open your files: Open your existing Word, Excel, or PowerPoint documents directly in WPS Office.
3. Enable WPS AutoSave: Log in to your WPS account and turn on AutoSave to securely sync changes to WPS Cloud in real-time.

Fully compatible with Microsoft Office formats like .docx, .xlsx, and .pptx.Built-in WPS Cloud offers reliable, instantaneous AutoSave across all your devices.Completely free and lightweight, running smoothly even on older hardware.Familiar, tabbed user interface requires zero learning curve to master.

microsoft office alternative - wps office

Frequently Asked Questions

Why does OneDrive AutoSave show a website security certificate error?

This error occurs when the secure connection between your device and Microsoft's cloud servers cannot be verified. It is usually caused by an incorrect system clock, expired browser certificates, or an antivirus program intercepting the connection.

How can I avoid losing my work if AutoSave fails?

If AutoSave stops working, immediately go to File > Save As and save a copy of the document to your local hard drive or desktop. Do not close the document until the local save is complete.

Can clearing my browser cache fix the certificate warning?

Yes, if you are editing documents via Microsoft 365 on the web. Clearing your browser's cache and cookies, or opening the document in an Incognito/Private window, can force the browser to fetch a fresh, valid security certificate.

Document & File Issues