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Fix 'Access Denied' Windows Update Errors via Group Policy - How to Fix Windows Security Log 'Permission Denied' Error-Windows Defender High CPU Usage After Malwarebytes Installation

2026-06-13 15:21:13
Fix 'Access Denied' Windows Update Errors via Group Policy - How to Fix Windows Security Log 'Permission Denied' Error-Windows Defender High CPU Usage After Malwarebytes Installation

Result check

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