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Fix Remote Desktop Authentication Failed: Credential Manager Guide - Fix 'File Locked by Unknown User' in Remote Desktop-Fix 'Could not get lock' Error in Ubuntu apt update

2026-06-13 22:34:25
Fix Remote Desktop Authentication Failed: Credential Manager Guide - Fix 'File Locked by Unknown User' in Remote Desktop-Fix 'Could not get lock' Error in Ubuntu apt update

Result check

  • Keep one change per test run so you know which step helped.
  • Undo temporary changes after the issue is confirmed.