zhizhu
Home / office-tools / Fix Windows Defender Service Not Starting (Connection Refused) - Resolve Expired Token Error by Clearing Chrome Cache-Microsoft Teams 504 Timeout Troubleshooting

Fix Windows Defender Service Not Starting (Connection Refused) - Resolve Expired Token Error by Clearing Chrome Cache-Microsoft Teams 504 Timeout Troubleshooting

2026-06-14 05:10:25
Fix Windows Defender Service Not Starting (Connection Refused) - Resolve Expired Token Error by Clearing Chrome Cache-Microsoft Teams 504 Timeout Troubleshooting

Result check

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