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Article ID: 929541 - Last Review: January 16, 2015 - Revision: 5.0

This article has been archived. It is offered "as is" and will no longer be updated.


On a computer that is running Windows Vista, if you configure a firewall after you install a Windows Media Center Extender device, the device may not work.


This problem may occur because the firewall closes ports that must be open for the Windows Media Center Extender device to work.


If you configure a firewall after you install a Windows Media Center Extender device, you must manually configure the firewall to open the following ports.
Collapse this tableExpand this table
ApplicationProtocol / PortDirectionNetwork
svchost.exeUDP 1900InboundLocal Subnet
svchost.exeTCP 3390InboundLocal Subnet
svchost.exeTCP 2177Inbound, OutboundLocal Subnet
svchost.exeUDP 2177Inbound, OutboundLocal Subnet
systemTCP 10244Inbound, OutboundLocal Subnet
ehshell.exeTCP 554Inbound, OutboundLocal Subnet
ehshell.exeUDP 5004, 5005Inbound, OutboundLocal Subnet
ehshell.exeTCP 8554-8558Inbound, OutboundLocal Subnet
ehshell.exeUDP 50004-50013Inbound, OutboundLocal Subnet
ehshell.exeUDP 7777-7781Inbound, OutboundLocal Subnet
mcx2prov.exeRandomInbound, OutboundInternet
The procedure that you use to manually configure these ports is different for each firewall model and for each firewall manufacturer. For more information about how to configure your firewall, see its documentation.

More information

For more information about how to configure a firewall for a Media Center Extender, visit the following Microsoft Web site: (

Applies to
  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Home Premium 64-bit Edition
  • Windows Vista Ultimate 64-bit Edition
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