Do not unlink the account before checking whether local files still have unsynced changes. First confirm that OneDrive is running, the service is available, and storage is not full.

Limits and filename rules can change. Use Microsoft’s current restriction page rather than an old list copied into a forum.

Confirm the Scope#

Select the OneDrive cloud icon in the notification area.

StatusCheck first
Processing changesRecent large folders, shortcuts, and locked files
PausedResume syncing
Account fullFree storage or change the plan
Not signed inAccount credentials
Red X on one fileFilename, path, permissions, or file lock
No cloud iconStart OneDrive

Open OneDrive on the web and confirm that the account itself is accessible.

Find the Blocking File#

  1. Select the cloud icon.
  2. Open View sync problems when available.
  3. Pause syncing for two hours, wait a moment, then resume it.
  4. Sort the OneDrive folder by Date modified.
  5. Look for a recently added large folder, a .tmp file, a hidden file, or a file still open in another application.
  6. Close applications that may hold the file open.
  7. Follow the current Microsoft restrictions page when OneDrive displays a filename or path error.
  8. Move one confirmed suspect item outside OneDrive and watch the status.

Do not delete a local file unless the web copy and any required version are confirmed.

Check Storage and Shortcuts#

OneDrive cannot upload new files when the account is full. Check storage on the web and free space on the local system drive.

Shared-folder shortcuts can also create unexpected sync activity. Review My files on OneDrive.com and use Remove shortcut only for a shortcut you no longer need. Never choose Delete for this test because deleting a shared folder can affect other people’s files.

Restart OneDrive#

  1. Select the cloud icon.
  2. Open Help & Settings.
  3. Quit OneDrive.
  4. Open it again from the Start menu.
  5. Wait for the initial scan.

If the icon is absent, press Windows + R and run:

%localappdata%\Microsoft\OneDrive\OneDrive.exe

Reset OneDrive#

Use a reset only after recording the account and folder location. A reset rebuilds the sync connection but should not delete cloud files.

Press Windows + R and run:

%localappdata%\Microsoft\OneDrive\OneDrive.exe /reset

Then start OneDrive from the Start menu if it does not reopen. Confirm the command against Microsoft’s current support instructions if the installation uses a different path.

Before unlinking:

  1. Copy unsynced critical files to a folder outside OneDrive.
  2. Confirm cloud files on OneDrive.com.
  3. Record the local OneDrive folder.
  4. Confirm the correct personal or work account.

After relinking, choose the intended folder and let OneDrive compare files. Do not create several similarly named OneDrive folders without checking which one is active.

Confirm Sync in Both Directions#

  1. Create a small text file in the OneDrive folder.
  2. Confirm the green check mark.
  3. Open OneDrive.com and find the file.
  4. Edit it on the web.
  5. Confirm the edit returns to the computer.