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Fix Microsoft Teams 504 Gateway Timeout Sync Issues - Troubleshooting Windows Security DNS Access Denied-Windows Search Access Denied Troubleshooting Guide

2026-06-13 23:13:06developer-tools
Fix Microsoft Teams 504 Gateway Timeout Sync Issues - Troubleshooting Windows Security DNS Access Denied-Windows Search Access Denied Troubleshooting Guide

Final checklist

  • Confirm that the same symptom is gone after a restart or refresh.
  • Keep the smallest working change and undo temporary diagnostic settings.