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How to Fix Git 'index.lock' File Exists Error - How to Fix a Windows 11 Update Stuck at 0 Percent-Enable Windows Defender Real-Time Protection via Group Policy

Updated 2026-07-28 02:40:14security-tools
How to Fix Git 'index.lock' File Exists Error - How to Fix a Windows 11 Update Stuck at 0 Percent-Enable Windows Defender Real-Time Protection via Group Policy
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.

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