I noticed that my Media Center program has not worked for sometime now, but now I want to be able to use it again... I've had this computer since about the beginning of 2007, and it's been working fine, but now Media Center straight up refuses to work... Every time I launch it give me the same exact error...

Also, this program stopped working around the Summer of this 2009 (last year), anyway I would really appreciate some help, I have read other posts about this, and none of them have helped. Most of them are outdated, and don't apply to me... or just don't work either way please help. Thanks.

I was having this problem too - select Media Center from the start menu, get about a 3 second pause, then that exact error every time (though the Process and Thread id's varied).

 I'm guessing there's a number of things that could cause something like this but for me, as far as I can tell, it turned out to be the "Security Accounts Manager" was disabled.  I'd noticed a few system errors in the event viewer that showed things failing to start due to requiring that service.  So I set the service to automatic, rebooted, and now Media Center is working again.

 So that might be worth a try?

 (right click My Computer, select Manage, expand "Services and Applications", click Services, find Security Accounts Manager, right click it and select Properties, change Startup Type to Automatic, reboot)