Auto Reconnect
Automatic reconnection allows an RDP client to automatically reconnect to the server without the need to re-authenticate. To enable the automatic reconnection if the RDP connection is dropped, please enable the checkbox in the RDP Client as you see on the screenshot below
Additonally you can enforce the reconnection as well on server-side:
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Open the Group Policy Management Console,
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In the console tree, select Computer Configuration > Administrative Templates > Windows Components > Remote Desktop Service > Remote Desktop Session Host > Connections.
- Enable "Automatic reconnection"
If the status is set to "Enabled", automatic reconnection is attempted for all clients running Remote Desktop Connection whenever their network connection is lost. - If you connection is unstable you can also test enabling "Configure keep-alive connection interval"
specify the time interval (in seconds) at which the keep-alive packets should be sent to maintain the connection