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Windows Defender Not Opening on Windows 11: How to Fix - Resolve 0xc004c003 After Changing Motherboard-Fix Windows Search Permission Denied Errors: Step-by-Step Guide

2026-06-13 11:05:25
Windows Defender Not Opening on Windows 11: How to Fix - Resolve 0xc004c003 After Changing Motherboard-Fix Windows Search Permission Denied Errors: Step-by-Step Guide

Result check

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