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Fix Git 'index.lock' File Exists Error on Linux - Fix Detached HEAD in Git and Switch Branches-How to Enable Windows Defender Real-Time Protection via Registry

2026-07-28 08:05:52
Fix Git 'index.lock' File Exists Error on Linux - Fix Detached HEAD in Git and Switch Branches-How to Enable Windows Defender Real-Time Protection via Registry

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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