By default, Windows Server allows only a single Remote Desktop session. When the limit is reached, you should get one of the following warnings:

“The number of connections to this computer is limited and all connections are in use right now. Try connecting later or contact your system administrator.”

This Video is show on Configure & Installation Remote Desktop Web Access in Server 2019.Simple way to Install & Configure Remote Desktop Web Access. When you connect to a computer (either a Windows client or Windows Server) through the Remote Desktop client, the Remote Desktop feature on your computer 'hears' the connection request through a defined listening port (3389 by default). You can change that listening port on Windows computers by modifying the registry. Start the registry editor.

or

“Another user is signed in. If you continue, they’ll be disconnected. Do you want to sign in anyway?”

Sometimes you may need to increase the number of simultaneous remote connections so that multiple users are allowed to connect via RDP at the same time. In this tutorial we’ll show you how to enable multiple Remote Desktop connections in Windows Server 2019 / 2016 / 2012.

Windows Server 2019 Remote Desktop Connection Broker

Remote Desktop Connection Manager Download

How to Enable Multiple Remote Desktop Connections?

1. Press the Windows key + R together to open the Run box, type gpedit.msc and hit Enter to launch the Local Group Policy Editor.
2. In the left pane, navigate to: Computer Configuration -> Administrative Templates -> Windows Components -> Remote Desktop Services -> Remote Desktop Session Host -> Connections. On the right, double-click on the “Restrict Remote Desktop Services users to a single Remote Desktop Services session” policy.
3. Select the Disabled option and click OK.
4. Next, double-click on the “Limit number of connections” policy to modify.
5. Choose the Enabled option and you can increase the “RD Maximum Connections allowed“.
6. Once it’s done, reboot the server and the group policy changes will automatically apply. Now your server should allow multiple users to connect via RDP at the same time.

Remote Desktop Connection Windows Server 2019 Free

Remote Desktop Server Setup