Can't use or connect account numbers above 17mln
There is some issue connected with GG transport. Earlier version of GG clients haven't got functionality to use account login with numbers above 17mln (probably limit connected with 2^24 = 16777216), these numbers were unavailable. But since new version which removed that limit was released last year, these account numbers are possible to use and there is a problem with communication between new and older clients when there is a person with account number bigger than 17mln. Kraken Gateway also is vulnerable and has a problem with communicating to that kind of users like the older native clients.
Windows Server 2003