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Fix 'Microsoft Teams Proxy Authentication Required' Error - Microsoft Store Proxy Configuration Troubleshooting-How to Fix Windows Defender Proxy Error

Updated 2026-06-14 05:13:04cloud-software
Fix 'Microsoft Teams Proxy Authentication Required' Error - Microsoft Store Proxy Configuration Troubleshooting-How to Fix Windows Defender Proxy Error
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.