How to modify RDS Idle Timeout and Keep alive time so users don’t get disconnected.
Logon to the RDS server in question.
Open local group policy
Win Key + R > gpedit.msc
Browse to Computer Config > Administrative Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Connections (enable keep alive)
Select Enabled for ‘Configure keep-alive connection interval’
Then browse to Computer Config > Admin Templates > Windows Components > Remote Desktop Services > Remote Desktop Session Host > Session Time Limits.
Select the option shown below and enter a time limit that you see fit.
Repeat the same for the User Configuration
Browse to User Configuration\Policies\Administrative Templates\Windows Components\Remote Desktop Services\Remote Desktop Session Host\Session Time Limits
Select the option shown below and enter a time limit that you see fit.
Apply gpupdate /force via Powershell or Command Prompt on the RDS Server