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Fix Command Prompt Can't Connect to SQL Server - Windows Activation 502 Error Firewall Fix-How to Resolve PowerShell DNS Lookup Failure

Updated 2026-06-13 21:34:16office-tools
Fix Command Prompt Can't Connect to SQL Server - Windows Activation 502 Error Firewall Fix-How to Resolve PowerShell DNS Lookup Failure
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.