Windows 10 and windows 11 24H2 won't let users mount smb - drives without username and password anymore. This has stirred up quite some trouble for network attached store (NAS - disk) users and this affects FreeLCS also. There are two ways to solve this problem. Either enable guest login from each windows machine again or start to use username and password authentication in FreeLCS.
In this document microsoft explains why they think this is a beneficial change and how to enable smb - mount guest login again in windows: https://learn.microsoft.com/en-us/windows-server/storage/file-server/enable-insecure-guest-logons-smb2-and-smb3?tabs=group-policy
Here is another article about the issue: https://techcommunity.microsoft.com/blog/filecab/accessing-a-third-party-nas-with-smb-in-windows-11-24h2-may-fail/4154300