We want to use our CompleteFTP server with multiple Windows domains. Server itself is not member a domain (workgroup machine). How can we add users from different domains (and/or add search domains). I managed to list users in one domain but now in other domains, is that somehow network/firewall related issue because I didn't tell domain controllers address anywhere , only domain FQDN . I also added two users from that domain where I could list users, but I couldn't log in CompleteFTP server using those windows users. Using Non-Windows user , I can login into CompleteFTP server via browser.