After installing Windows AntiSpyware (Beta) in MCE 2005,Windows Media Center Extender cannot establish a remote connection.
You may receive the following error message from Windows Media Center Extender for Xbox:
The Media Center for Xbox has unexpectedly disconnected from the Media Center PC. The Extender requires a connection to the computer. The Extender might have been disconnected because of network congestion, a network disconnection, or because the PC has been turned off.
You may receive an error message that is similar to the following from third-party extenders:
An error occurred while the Media Center Extender tried to communicate with the Media Center PC. Verify your network and the PC are working and then select OK to try again.
Why Does it happen?
Windows AntiSpyware (Beta) is not compatible with Media Center 2005.
Right-click the notification area icon and, then click Shutdown Microsoft AntiSpyware.