First step: Turn on Remote Desktop:
Computer---Properties---remote settings---Check "Allow computers running any version of Remote Desktop to connect (less secure)"
Step Two: Set the maximum number of Remote Desktop connections
Control Panel--Manage Tools--Remote Desktop services--Remote Desktop Session Host settings--Remove the "restrict each user to only one session" tick, and then double-click the rdp-tcp---network adapter in the connection--the maximum number of connections is modified to 2 At this point, the number of simultaneous Remote Desktop connections is set to 2.
Step three: Run Gpedit.msc and modify the number of connections in Group Policy
Group Policy settings are located in Computer Configuration \ policies \ Administrative Templates \ Windows Components \ Remote Desktop Services \ Remote Desktop Session host \ Connections, modify the number of connections
This article is from the "Wang Liming" blog, make sure to keep this source http://afterdawn.blog.51cto.com/7503144/1913473
To modify the number of Remote Desktop connections for Windows Server 2008