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Fix Windows Defender Blank Screen in Windows 10 - Java JDK Not Recognized After Installation: Fixes and Checks-How to Restore Default Task Scheduler in Windows 11

Updated 2026-06-13 21:42:04cloud-software
Fix Windows Defender Blank Screen in Windows 10 - Java JDK Not Recognized After Installation: Fixes and Checks-How to Restore Default Task Scheduler in Windows 11
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.