Looking for logging into the Wikimedia 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 Wikimedia site. After that you can login as usual with your login credentials.
https://login.wikimedia.org/wiki/Main_Page
https://commons.wikimedia.org/wiki/Category:Login
https://meta.wikimedia.org/wiki/Single_login
https://www.mediawiki.org/wiki/Topic:Qguibcn63mqcag8i
https://www.mediawiki.org/wiki/Readers/Various_wikis_of_Wikimedia,_and_how_to_log_in_to_them
https://www.mediawiki.org/wiki/API:Login
https://www.mediawiki.org/wiki/Design/Archive/Wikimedia_Foundation_Design/Login
http://write.flossmanuals.net/wikimedia-commons/log-in-create-account/
https://wordpress.org/plugins/simison-wikimedia-commons-potd-wp-login/
https://en.wikipedia.org/wiki/Wikipedia:Unified_login
https://wikimediafoundation.org/
https://discourse-mediawiki.wmflabs.org/t/enabling-social-login/71?page=2
https://archive.org/details/incr-loginwiki-20181130