Fix Edge Sync Not Syncing History - How to Fix 'index.lock file exists' in Git Rebase-Resolve Windows 11 Upgrade Hang at 99% Safe Mode

Updated 2026-07-28 10:01:32backup-recovery
Fix Edge Sync Not Syncing History - How to Fix 'index.lock file exists' in Git Rebase-Resolve Windows 11 Upgrade Hang at 99% Safe Mode
Before changing system settings, save your work and note the exact error text so you can compare results after each step.

Extra verification checklist

  • Restart the affected app after changing permissions or configuration files.
  • Test the same workflow in a clean browser profile or a temporary user account.
  • Compare the result on another network if the error may be connection related.