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Windows Firewall: Middle-tier application server

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Applies To: Windows Server 2003, Windows Server 2003 R2, Windows Server 2003 with SP1, Windows Server 2003 with SP2

Add TCP port 135 and Dllhost.exe to the Windows Firewall exceptions list.

If you are using Microsoft Distributed Transaction Coordinator (MS DTC), add Msdtc.exe to the Windows Firewall exceptions list.