File explorer closes when I attempt to log in to a network location

I have a USB printer that is coected to one PC in our network. Because it is currently the only printer in the office, the best way I found to set this printer up, is to share it to the other PCs in the LAN.

Now, the host PC (PC1) is coected to the domain, using Windows 10 Professional, and all the other PCs are using Windows 10 Home. When I attempt to coect to the shared printer on PC1, I have to login to the PC1 network location (\PC1) as the Administrator (i.e. domainadmin). I can then coect to the printer, and all is fine.

However, since all of the PCs are laptops, they often are taken home at the end of the day, and discoected, meaning that they need to be re-coected every time they come back in, and I'm getting tired of having to set up this coection over and over.

So I attempted to change the sharing rules to add in another user, on another PC (PC2) allowing them to set this up for themselves, logging in using their own credentials (i.e. domainuseame), without having to give them the Admin credentials (an obvious no-no).

However, when the user attempts to log in to \PC1 from their computer (PC2), using their credentials, the Windows Explorer would refresh (the taskbar would disappear, then reappear) but the only window that would close is the File Explorer.

What's going on?