See link to thread below advises problem and what we've tried.
They recommended I post problem here,
According to your description, you are mapping network drive to SharePoint sites and the sites are in SharePoint server.
Since your query is related to on-premise SharePoint Server and this forum category is mainly focused on SharePoint online related issues and questions, to ensure you get the dedicated support, we suggest you post a new thread in our TechNet forum , it is the specific channel handling SharePoint server related issues and questions.
Basically we map the drive, but as soon as the user logs off or reboot, when log back on, get message can't reconnect network drives, try to reconnect prompts for login but doesn't access the login, we have to disconnect the network drive and map it again, but it's only good for that logged o session.
We are using on-premise SharePoint Server