Looking for logging into the Windows 10 Screen Gpo site and are not getting the correct working link for it? In such a case, you can use the links given here by searching your desired login page in the search box. If the page is present on our website then you will get all the links related to the Windows 10 Screen Gpo site. After that you can login as usual with your login credentials.
https://social.technet.microsoft.com/Forums/en-US/ac66e679-913f-49b3-bbf0-8f450a3129e3/how-to-change-windows-10-login-background-via-gpo?forum=win10itprosetup
https://docs.microsoft.com/de-de/windows/configuration/windows-spotlight
https://community.spiceworks.com/topic/1262253-change-windows-10-lock-screen-background-image-gp
https://community.ivanti.com/thread/57687
https://www.reddit.com/r/sysadmin/comments/47pxau/gpo_to_change_windows_10_login_background/
https://borncity.com/win/2018/09/15/windows-10-v1803-custom-login-lock-screen-image-wont-show-until-user-login/
https://www.urtech.ca/2017/05/solved-windows-10-lock-screen-graphic-gpo-not-working-on-1703/
https://superuser.com/questions/1171470/windows-10-lock-logon-screen-image-through-gpo
https://www.howtogeek.com/112110/how-to-set-a-custom-logon-screen-background-on-windows-7/
http://www.grouppolicy.biz/2012/11/how-to-use-group-policy-to-change-the-default-lock-screen-image-in-windows-8/
http://www.tomshardware.com/faq/id-2782614/change-windows-login-screen-background.html
https://www.cnet.com/how-to/change-the-windows-10-login-screen-background-to-a-solid-color/
https://www.tenforums.com/customization/58699-how-change-sign-login-screen-background-picture-windows-10-a.html