Supermicro IPMI & Samba/Windows share Special thanks to Peter Kieser, whose blog post I found after a bit of searching: https://peterkieser.com/2020/05/14/supermicro-ipmi-virtual-media-and-samba-4-11-ubuntu-20-04/ For most modern installations of Samba (according to the blog post, Samba 4.11+ on Ubuntu 20.04), you need to manually set NT1 as a supported protocol in /etc/samba/smbd.conf - Make sure it's under the [global] section: [global] server min protocol = NT1 Run systemctl restart smbd for good measure and try to connect again. I had to set guest ok = yes under my share settings as well and get rid of username/password in the IPMI input fields, but maybe that was unrelated: [shares] path = /data/shares public = yes guest ok = yes read only = yes "Share Host" is the public IP address of your Samba server.