Microsoft KB Archive/929541

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Knowledge Base


A Windows Media Center Extender device may not work after you configure a firewall in Windows Vista

Article ID: 929541

Article Last Modified on 2/21/2007



APPLIES TO

  • Windows Vista Home Premium
  • Windows Vista Ultimate
  • Windows Vista Home Premium 64-bit edition
  • Windows Vista Ultimate 64-bit edition



SYMPTOMS

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.

CAUSE

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

RESOLUTION

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.

Application Protocol / Port Direction Network
svchost.exe UDP 1900 Inbound Local Subnet
svchost.exe TCP 3390 Inbound Local Subnet
svchost.exe TCP 2177 Inbound, Outbound Local Subnet
svchost.exe UDP 2177 Inbound, Outbound Local Subnet
system TCP 10244 Inbound, Outbound Local Subnet
ehshell.exe TCP 554 Inbound, Outbound Local Subnet
ehshell.exe UDP 5004, 5005 Inbound, Outbound Local Subnet
ehshell.exe TCP 8554-8558 Inbound, Outbound Local Subnet
ehshell.exe UDP 50004-50013 Inbound, Outbound Local Subnet
ehshell.exe UDP 7777-7781 Inbound, Outbound Local Subnet
mcx2prov.exe Random Inbound, Outbound Internet

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:

Keywords: kbexpertisebeginner kbtshoot kbprb KB929541