A Microsoft file hosting and synchronization service.
Check Microsoft’s Service Health portal first because a “server is too busy” message can indicate a temporary OneDrive service problem; if no incident is reported, test OneDrive on the web to separate a service/account issue from a Windows sync-app issue.^1^
1. Determine whether OneDrive or the PC is affected
- Open the Service Health portal linked from Microsoft’s OneDrive known-issues page.
- If OneDrive is degraded, keep local copies of important changes and retry after Microsoft reports recovery.
- Sign in to OneDrive through a private Edge window:
- Edge → Settings and more (…) → New InPrivate window.
- Open OneDrive.com and try opening or uploading a small test file.
- Interpret the result:
- Web sign-in/upload also fails: check the account credentials, Microsoft service status, VPN/firewall, and internet connection. Microsoft specifically identifies these as possible access causes.^1^
- The website works but the desktop app does not: continue with the sync-client steps below.
2. Fix the Windows OneDrive sync client
- Select the OneDrive cloud icon in the Windows notification area.
- Review the displayed sync status and affected files. Close any listed file that is still open.
- If it says Processing changes, allow large batches to finish. A large file, many recently added files, an open file, or a recent sign-in/update can delay synchronization.^2^
- Check storage usage. If Microsoft storage is full, OneDrive cannot upload, edit, or synchronize new files.^3^
- Update OneDrive to the latest version. Microsoft lists this as a sign-in recovery step.^1^
- If synchronization remains stuck, unlink and reconnect the account:
- OneDrive cloud icon → Help & Settings → Settings → Account → Unlink this PC.
- Start OneDrive and sign in again.
If many files are synchronized locally, reduce the workload using Files On-Demand or choose fewer folders to sync. Microsoft also recommends checking the item count by opening File Explorer, right-clicking the OneDrive folder, and selecting Properties.^4^
3. Diagnose Edge separately
The information available does not establish that OneDrive is causing the Edge errors. Check Edge’s own CPU and memory usage:
- Edge → Settings and more (…) → More tools → Performance.
- Review Tabs performance.
- For any high-usage tab, select its three-dot menu and choose Sleep tab or Close tab. The status should return toward green as resource use falls.^5^
- Update Edge through Settings and more (…) → Settings → About Microsoft Edge.
- If Edge still fails, close unnecessary tabs, extensions, downloads, and other applications. Low available memory can prevent pages from loading while other software is running.^6^
If the additional Edge error continues, record its exact wording or error code, the affected website/software, and whether it also occurs in an InPrivate window. Those details are needed to distinguish an extension problem from an account, network, or browser issue.
References
- Fixes or workarounds for recent issues in OneDrive
- Troubleshoot OneDrive Sync Issues: Stuck on "Processing Changes" | Microsoft Support
- [Personal accounts](https://support.microsoft.com/onedrive/fix-onedrive-sync-problems)
- Restrictions and limitations in OneDrive and SharePoint | Microsoft Support
- Learn about performance features in Microsoft Edge | Microsoft Support
- What to do if Microsoft Edge isn't working | Microsoft Support