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Fix Windows Defender Error 0x80073b01 (Crash on Startup) - Fix Windows Update High CPU Usage with Cleanup-Reinstall Windows Activation Error – Connection Timeout

2026-06-14 04:57:44
Fix Windows Defender Error 0x80073b01 (Crash on Startup) - Fix Windows Update High CPU Usage with Cleanup-Reinstall Windows Activation Error – Connection Timeout

Result check

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

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