How to make sure that the RDP connection does not disappear?

Question

RDP

There is a virtual application server running Microsoft Windows Server 2012 R2. The server is not in a domain. Periodically, access to the server with Windows 7 via RDP falls off (hangs on the connection quality assessment). Restarting the services related to the remote desktop does not help, only a full server reboot helps, which is not always good due to the fact that about 500 users connect to the application on the server. On the same server, the Remote Desktop Licensing Manager is raised, it is registered in the group policy settings. Errors are not thrown, licenses are issued. I did not find anything suspicious in the logs.
Also, the VipNET client is installed on the server, if it suddenly helps for diagnostics.
Tell me, can anyone know how to fight?

Answer 1

Try to include an explicit KeepAlive package
in ms_ts.reg and run this file. then restart the server
Windows Registry Editor Version 5.00
[HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\Terminal Services]
"KeepAliveEnable"=dword:00000001
"KeepAliveInterval"=dword:00000001
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Terminal Server\WinStations \RDP-Tcp]
"KeepAliveTimeout"=dword:00000000
"KeepAliveEnable"=dword:00000001
"KeepAliveInterval"=dword:00000001
[HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Tcpip\Parameters]
"KeepAliveInterval"=-
"KeepAliveTime"=-
"

Answer 2

Try disabling RDP-UDP