On the Sever Side

If you are network admin who has the rights to change the server settings, you can turns off the autodisconnect feature of the server service on the server side so that all workstations that have the network map drive to the server can keep the connection live as long as they want to. To do so, simply run the following command from a DOS Prompt window that runs as administrator.

net config server /autodisconnect:-1

However, for whatever the reason, if you still want autodisconnect feature on but want a longer period to disconnect, you can use the same command as following:

net config server /autodisconnect:number
number is the number of minutes that you want the server to wait before disconnecting the connection.

That’s it, and hope it helps.