Unable to access macOS 15 Sequoia SMB shares from Windows 10

I've tried accessing my macOS 15.3 SMB shares from Windows 10 without success. "Windows sharing" is enabled in macOS. I get a login prompt but it says the credentials are wrong every time. I know they're not. What I tried: - Username with and without workgroup, i.e: WORKGROUP\username and username - Connecting using smb://{ip address, mDNS hostname}, \\netbiosname, netbiosname in Explorer's address field... Every variation I could think of. - Connected to other SMB shares on the network, e.g. \\rpi.local, which worked - Connecting in the other direction (from macOS) which I could not make work either What else is there to try?