Media Center Extenders use network ports to communicate over the network with PCs running Microsoft Windows XP Media Center Edition 2005. These ports can be blocked by firewalls running on your Media Center PC.
The McAfee Personal Firewall Plus application (either standalone or as part of the McAfee Internet Suite) may be preconfigured to allow Media Center Extender to connect to your Media Center PC.
Note: The McAfee Privacy Service does not allow connections between the Xbox 360 console and a Windows Media Center-based PC. Connections between the Xbox 360 console and other Windows-based computers by using Windows Media Connect are also blocked. To allow these connections, you must uninstall the McAfee Privacy Service. For more information, contact McAfee technical support/customer service.To manually configure or verify the configuration of Personal Firewall Plus, follow these instructions:
- Click Start, click All Programs, point to McAfee, and then click McAfee Personal Firewall Plus.
 - On the left side of the window, click Internet Applications. A list of applications and their permissions for accessing local networks and the Internet are displayed.
 - Make sure that the following applications are included in the list of applications:
| Application Name |
File Name |
| Media Center |
Ehshell.exe |
| MCRD Device Service |
Mcrdsvc.exe |
| Generic Host Process for Win32 Services |
Svchost.exe |
| Media Center Extender Tuning Wizard |
Mcxnettw.exe |
| MCRMgr |
Mcrmgr.exe |
| Media Center Extensibility Host |
Ehexthost.exe |
- If any of these applications are not included in the list, click New Allowed Application, locate the c:\WINDOWS\ehome folder (or the c:\WINDOWS\system32 folder if the Svchost.exe file is not included), and then select the application’s file name. Repeat this step for each application that does not appear in the list.
- In the Permissions column for each application listed in step 3, make sure that Allow Full Access is displayed. If not, select the application in the list, and then click Allow Full Access under Change Permission To in the lower right-hand corner of the window.
Now your firewall is configured to allow your Media Center Extender to connect to your Media Center PC.If you were unable to finish setting up your Media Center Extender, you will need to run setup again from the Media Center Extender Manager. To run setup again in the Media Center Extender Manager:
- Click Start, point to All Programs, click Accessories, click Media Center and then click Media Center Extender Manager.
- On the File menu, click Add a New Extender or Add a New Xbox 360, and then follow the instructions on the screen.
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