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Fix Windows Defender Proxy Error: Configuration Guide - Fix Teams Sign-In Error cxa20002-Troubleshoot Windows Security Proxy Configuration

Updated 2026-06-14 03:40:13cloud-software
Fix Windows Defender Proxy Error: Configuration Guide - Fix Teams Sign-In Error cxa20002-Troubleshoot Windows Security Proxy Configuration
Likely symptom
Likely cause
Safe rollback

Verification route

  • Repeat the original action, not only a simplified test case.
  • Restart the app or reload the service after configuration changes.