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Home / macos-help / Fix Git 'index.lock' File Exists Error in SourceTree - How to Fix Windows 11 Installation Assistant Hanging at 99%-How to Resolve NET::ERR_CERT_AUTHORITY_INVALID on Windows 10

Fix Git 'index.lock' File Exists Error in SourceTree - How to Fix Windows 11 Installation Assistant Hanging at 99%-How to Resolve NET::ERR_CERT_AUTHORITY_INVALID on Windows 10

2026-07-28 15:46:23macos-help
Fix Git 'index.lock' File Exists Error in SourceTree - How to Fix Windows 11 Installation Assistant Hanging at 99%-How to Resolve NET::ERR_CERT_AUTHORITY_INVALID on Windows 10

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.

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