In case of an RPC error 23014 or Error 0x59E6 try again after waiting a few minutes, the RD Gateway server has reached the maximum number of active connections. Depending on the Windows version running on the RD Gateway the maximum number of connections differs: The Windows Server 2008 R2 Standard implementation limits the number of connections to 250. The Windows Server 2008 R2 Foundation implementation limits the number of connections to 50. All other Windows implementations allow an unlimited number of connections.