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Windows Defender Not Opening on Windows 11: How to Fix - How to Fix Windows Update Error 0x80073712 with a Clean Boot-Troubleshoot Windows Update Cleanup Not Completing

2026-06-13 11:04:10
Windows Defender Not Opening on Windows 11: How to Fix - How to Fix Windows Update Error 0x80073712 with a Clean Boot-Troubleshoot Windows Update Cleanup Not Completing

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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