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Windows Security App Not Opening? Try These Steps - Fix DNS Probe Finished NXDOMAIN Error in Windows 10-Edge Sync Not Working with Family Safety Fix

Updated 2026-07-28 22:45:47developer-tools

Windows Security App Not Opening? Try These Steps - Fix DNS Probe Finished NXDOMAIN Error in Windows 10-Edge Sync Not Working with Family Safety 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.