It's a connection error. either the connection is not fast enough, or your ISP is not letting the data through. When you have this problem everything else works fine, even the movie and music marketplace, but for some reason the game market is either too
much for the connection or may be blocked by the ISP.
However, you can still buy games here and they will go to your active downloads and usually have no trouble downloading to the xbox the next time you log in on it.
Did this solve your problem?
Sorry this didn't help.
Great! Thanks for marking this as the answer.
How satisfied are you with this reply?
Thanks for your feedback, it helps us improve the site.