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Fix ERR_SSL_PROTOCOL_ERROR on Windows 10 - Fix Task Scheduler Access Denied on Windows-Windows Defender Update Fails with Code 0x80070643

2026-06-15 23:31:37
Fix ERR_SSL_PROTOCOL_ERROR on Windows 10 - Fix Task Scheduler Access Denied on Windows-Windows Defender Update Fails with Code 0x80070643

Result check

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