Workaround: open Control Panel-admin tools, Terminal Services-Terminal Services Configuration
1, the connection: Rdp-tcp point right Key, properties. Network adapter-Maximum number of connections,
2.. By default, if you do not add Terminal Services functionality, the maximum can only be adjusted to 2 connections at a time.
3, Terminal Server Licensing mode: Right-click, properties. General, limit each user to use only one session, remove the hook, OK. Here you can log in more. If no settings are in effect, restart.
4. Prevent remote users from terminating the console administrator.
Run-gpedit.msc, Computer Configuration-Admin Template-windows component-Terminal Services. Terminal Server-Connection.
Configuration: Denies logging off the administrator who is already logged on to the console session, setting enabled.
When you restart your computer, Windows 2008 Sever can support multiple user logons.