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Fix Windows Defender Sync Issues with Microsoft 365 - How to Handle Git Non-Fast-Forward Push-Fix 'Could not get lock' Error in Ubuntu apt update

2026-06-14 13:28:15developer-tools
Fix Windows Defender Sync Issues with Microsoft 365 - How to Handle Git Non-Fast-Forward Push-Fix 'Could not get lock' Error in Ubuntu apt update

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.