Why is the creation page saying my gamertag is invalid?
There are usually two explainations to this problem, the most obvious being that your gamertag does in fact not exist. However, if you know your gamertag does exist and are wondering why we’re saying it doesn’t then the answer is quite simple. At the time of checking to see if your gamertag exists we were told that it does not. This usually means that Xbox.com or Xbox Live is undergoing some sort of maintenance, and can’t allow us to access the data at the current time. To ensure we don’t send repeat requests for the same gamerag we also specify a certain amount of time before we will proceed to ask if the gamertag is valid once again. This will also explain why some gamertags that have previously registered are no longer shown as being an Xbox Live Gold or Xbox Live Silver member. This means there may be a slight delay between any sort of maintenance, and the time at which we will see your gamertag is valid which should be a maximum of an hour after the maintenance is over.