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Fix Microsoft Teams SSL Certificate Error: Invalid Certificate - How to Resolve Connection Refused on localhost in CMD-Windows Security CPU Spike Troubleshooting

2026-06-13 23:48:16
Fix Microsoft Teams SSL Certificate Error: Invalid Certificate - How to Resolve Connection Refused on localhost in CMD-Windows Security CPU Spike Troubleshooting

Result check

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