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Home / windows-fixes / Fix Windows Security Cache Sync Errors: Step-by-Step Guide - Task Scheduler Not Running After Update? Try These Fixes-Windows Defender Auth Failed – Group Policy Fix

Fix Windows Security Cache Sync Errors: Step-by-Step Guide - Task Scheduler Not Running After Update? Try These Fixes-Windows Defender Auth Failed – Group Policy Fix

Updated 2026-06-13 17:34:46windows-fixes
Fix Windows Security Cache Sync Errors: Step-by-Step Guide - Task Scheduler Not Running After Update? Try These Fixes-Windows Defender Auth Failed – Group Policy Fix
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.