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Fix Task Scheduler Proxy Authentication Failed Error - Clean Boot to Fix Windows Update Token Expired-Fix Windows Defender Token Expired Group Policy Error

2026-06-14 06:32:16
Fix Task Scheduler Proxy Authentication Failed Error - Clean Boot to Fix Windows Update Token Expired-Fix Windows Defender Token Expired Group Policy Error

Result check

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