Update for Media Center TV Pack for Windows Vista that resolves logon issues in some extensibility applications
Microsoft has released an update for Media Center TV Pack for Windows Vista. This update is intended for computers that are running Windows Vista Home Premium or Windows Vista Ultimate. This update for Media Center TV Pack for Windows Vista resolves a problem in which you cannot log on to some Media Center extensibility applications that use Media Center for Windows Vista.
For more information on this issue, including potential causes, workarounds, and resolutions, see: Microsoft KB Article KB972477.