Hello I'm Bae, and i'm sorry for my poor English. I want to make my users be able to use seamless single sign on to Microsoft Azure by setting Firefox config with Active Directory group policy. First, I created the 'user.js' file and wrote 'user_pref("network.negotiate-auth.trusted-uris","https://autologon.microsoftazuread-sso.com");' and 'user_pref("network.negotiate-auth.delegation-uris","https://autologon.microsoftazuread-sso.com");' in it. Second, I put this user.js file in the Firefox¥Profiles folder (such as xxx.default-release). Third, I checked that the setting was changed on about:config. Last, I also checked that I could use seamless single sign on to "www.office.com". What I want to do is to distribute this user.js file to my domain users (exactly, to users' firefox profiles folder) by group policy. Please tell me how to do. Or, if there is any way to set 'network.negotiate-auth.trusted-uris' and 'network.negotiate-auth.delegation-uris' without user.js file, such as Firefox group policy template, please tell me which one I should modify. Thanks.