RemoteApp session timeout

Hello,

My wanted scenario:

RemoteApp session wont be closed after user session disconnection (after 20s) for future quicker RemoteApp start.

Changes I have done:

I have set in Local Group Policy “Set time limit for logoff of RemoteApp sessions” to 5 days, updated policy, restarted server.

Current behavior:

Changes didnt help. User RemoteApp session will be closed on server within those 20 sec and when I want to start session again it takes longer because of user logging, authentification.

Enviroment:
Windows Server 2008 R2, working group
Windows 7