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Fixing Microsoft Teams Authentication Error CAA2000C - How to Fix 'File Locked by System Process' in PowerShell-Troubleshooting Activation Error 0x80070003 in Windows

2026-06-14 05:42:00
Fixing Microsoft Teams Authentication Error CAA2000C - How to Fix 'File Locked by System Process' in PowerShell-Troubleshooting Activation Error 0x80070003 in Windows

Result check

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