No longer able to connect to server: "URLs with the type "smb:" are not supported"
I use a MacBook Pro (2020, Intel, running Ventura 13.5) at work, where it is unofficially tolerated and very emphatically unsupported by our IT group. I've used Macs here for years and have made things work, but yesterday, mid-day, I tried to connect to our server and got the message "URLs with the type "smb:" are not supported". I hadn't changed anything, and the server had worked in the morning, and continues to work for my Windows colleagues.
My understanding of these things is limited, so forgive me if there's an obvious solution I'm missing here. I initially connected to the server by typing in the URL—when I try to look for servers on the network nothing comes up (and never did), but I may be doing this wrong.
Anybody have any suggestions? This is the main place my team keeps files so just living with it is not really an option. If I can't figure anything out in the next couple days I'm literally just going to order a Windows computer because I really can't live without access to this (right now people are moving things to me on USB sticks but I'll need overseas access soon).
MacBook Pro 13″