Looking for logging into the Nextcloud Admin Page 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 Nextcloud Admin Page site. After that you can login as usual with your login credentials.
https://docs.nextcloud.com/server/12/admin_manual/installation/installation_wizard.html
https://docs.nextcloud.com/server/9/admin_manual/configuration_user/reset_admin_password.html
https://github.com/nextcloud/server/issues/8201
https://github.com/nextcloud/server/issues/11149
https://github.com/nextcloud/server/issues/13090
https://discourse.mailinabox.email/t/how-to-access-the-administrator-account-for-nextcloud-server/2349
https://chemnitzer.linux-tage.de/2018/media/programm/papers/315_Einblicke_in_Nextcloud_s_User_Management_folien_Insights_Into_User_Management.pdf
https://help.univention.com/t/can-not-login-as-admin-nextcloud/8926
https://decatec.de/home-server/nextcloud-tipps-tricks-fuer-admins-und-benutzer/
https://forum.yunohost.org/t/no-more-access-in-nextcloud/4170
https://www.clearos.com/resources/documentation/clearos/content:en_us:7_ug_nextcloud
https://www.digitalocean.com/community/tutorials/how-to-install-and-configure-nextcloud-on-ubuntu-16-04
https://wiki.nethserver.org/doku.php?id=howto:nextcloud