zhizhu
Home / developer-tools / Fix Task Scheduler Connection Timeout Error - Windows Defender Won't Turn On: 0x80070422 Troubleshooting-How to Fix Blank Desktop After Windows Activation

Fix Task Scheduler Connection Timeout Error - Windows Defender Won't Turn On: 0x80070422 Troubleshooting-How to Fix Blank Desktop After Windows Activation

Updated 2026-06-14 00:40:04developer-tools
Fix Task Scheduler Connection Timeout Error - Windows Defender Won't Turn On: 0x80070422 Troubleshooting-How to Fix Blank Desktop After Windows Activation
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.