Local OneDrive does not seem to be syncing

The web account works, but the desktop client cannot finish adding its local OneDrive folder, and resetting it has already failed. That separates this from simply waiting for files to upload, although it does not identify the cause. Preserve the renamed old folder, especially files that never reached the web; do not delete it during troubleshooting. Confirm the desktop sync app is current, restart it, and sign in using the same personal or work/school account that opens the expected web library. If an old account remains linked, use Microsoft’s supported unlink/relink procedure instead of repeatedly renaming folders. Test connectivity through another trusted network without disabling security protections. For an organizational account, ask IT to check service health, sign-in failures, and OneDrive tenant allow/block policies, which can prevent an account being added. Give support the exact error, client version, account type, and failure time; another reset is not a guaranteed fix