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Fix Git 'index.lock file exists' Error - Windows Defender Real-Time Protection Greyed Out: How to Fix-How to Restore Windows Security App in Windows 10/11

2026-07-28 13:36:21
Fix Git 'index.lock file exists' Error - Windows Defender Real-Time Protection Greyed Out: How to Fix-How to Restore Windows Security App in Windows 10/11

Result check

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

Next references

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