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Fix Windows Defender Blank Screen Error Code - Fix Windows Defender Service Not Starting (Error 0x80070422)-Reinstall Windows Security Module: Step-by-Step

2026-06-13 16:03:09
Fix Windows Defender Blank Screen Error Code - Fix Windows Defender Service Not Starting (Error 0x80070422)-Reinstall Windows Security Module: Step-by-Step

Result check

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

Next references

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