OneDrive File Issues

How to Fix OneDrive and Microsoft 365 Sign-In and Sync Issues on Windows 11

Kushani Nimanthika Oct 15, 2026 869 views

Question details

The user is unable to sign in to OneDrive and Microsoft 365, which blocks them from syncing data and editing documents.

Fixing OneDrive and Microsoft 365 Sign-In and Sync Problems on Windows 11

Product: Microsoft 365, OneDrive, Excel
Device & OS: Windows 11
Scenario: Attempting to sync cloud files and save Excel spreadsheets on a Windows 11 PC with an active Microsoft subscription.
Observed behavior: Microsoft 365 applications falsely report no active subscription and refuse to save files. OneDrive fails to sign in or sync, displaying an internet connection error despite an active network connection.

Before you start

Ensure your Windows 11 device is connected to a stable internet network and verify that your system date and time are set to update automatically, as incorrect time settings can block Microsoft authentication servers.

Solution 1Recommended

Troubleshoot Network Firewalls and Refresh Sign-In Credentials

Resetting your login state and ensuring your firewall isn't blocking Microsoft services is the most effective way to resolve sync and false subscription errors.

Third-party security software can sometimes mistake Microsoft 365 background processes for suspicious activity, blocking their internet access. Temporarily disabling these can help isolate the issue.

Temporarily Disable Antivirus or Firewall

Turn off any third-party antivirus software temporarily through your system tray to check if it is blocking OneDrive or Office from connecting to the internet.

Sign Out of Microsoft 365 and OneDrive

Open Excel, go to 'File', select 'Account', and click 'Sign out'. Next, right-click the OneDrive cloud icon in your taskbar, click the gear icon for 'Settings', navigate to the 'Account' tab, and click 'Unlink this PC'.

Restart Your Computer

Click the Windows Start menu, select the Power icon, and choose 'Restart' to clear temporary network glitches and reset active background tasks.

Sign Back In

After your PC reboots, open Excel and sign in again using the exact Microsoft account associated with your active subscription. Open the OneDrive app and log back in to resume syncing.

Troubleshoot Network Firewalls and Refresh Sign-In Credentials

Allowing Apps Through Firewall: If this resolves the issue, remember to re-enable your antivirus and manually add Microsoft 365 and OneDrive to its list of allowed applications.

Solution 2

Reset OneDrive and Update Network Drivers

Use this solution if your internet connection is working perfectly in web browsers but OneDrive continually reports an internet connection error.

Free Microsoft Office alternative

Try WPS Office: No Subscription Hassles, High Compatibility

If you are tired of Microsoft 365 subscription validation errors and constant sync issues blocking your workflow, switch to WPS Office. It is a free, lightweight office suite that doesn't lock your basic saving features behind complex sign-in requirements.

1. Download and Install: Visit the official WPS website to download the free office suite and run the installer on your Windows 11 PC.
2. Open Your Files: Double-click your existing Excel (.xlsx) files to open them directly in WPS Spreadsheet.
3. Edit and Save Locally: Edit your documents and save them directly to your hard drive without needing an active internet connection or a paid subscription.

Free to use without forcing yearly subscription checks just to save files.Fully compatible with Microsoft Excel, Word, and PowerPoint formats (.xlsx, .docx, .pptx).Lightweight design ensuring fast startup and smooth operation on Windows 11.Built-in cloud sync capabilities along with reliable local file saving without internet dependency.

microsoft office alternative - wps office

Frequently Asked Questions

Why does Excel say I don't have a Microsoft 365 subscription when I do?

This usually happens when there is a synchronization issue with Microsoft's activation servers, or if you are signed into your Office apps with a different Microsoft account than the one used to purchase the subscription. Signing out and back in can force the software to refresh its license state.

How do I fix OneDrive showing an internet connection error when my Wi-Fi works?

Ensure third-party firewalls or antivirus software are not blocking OneDrive's specific ports. Resetting the OneDrive app via the Run dialog or updating your Windows 11 network adapter drivers can also resolve these false offline errors.

Can I save my Excel files locally if Microsoft 365 won't sign in?

If Microsoft 365 deactivates due to an unverified subscription, it may enter a reduced functionality mode, preventing you from saving files even locally. You will need to resolve the sign-in issue or use a highly compatible alternative like WPS Office to edit and save your files.

Document & File Issues