Looking for logging into the Minecraft Could Not Cannot Connect Authentication Server 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 Minecraft Could Not Cannot Connect Authentication Server site. After that you can login as usual with your login credentials.
https://www.minecraftforum.net/forums/support/java-edition-support/1862248-could-not-log-in-cannot-contact-authentication
https://gaming.stackexchange.com/questions/232776/if-i-cant-login-to-my-launcher-and-i-can-login-to-minecraft-net-and-servers-are
https://www.reddit.com/r/Minecraft/comments/9fbaq6/anyone_know_how_to_fix_failed_to_log_in/
https://bukkit.org/threads/authentication-servers-down.296475/
https://forums.atlauncher.com/thread-8907.html
https://help.mojang.com/customer/en/portal/articles/1218708-multiplayer-connection-issues-java-edition-
https://hypixel.net/threads/how-to-fix-the-auth-glitch.576855/
https://github.com/cuberite/cuberite/issues/2675
https://www.akliz.net/manage/knowledgebase/29/How-to-Fix-Connection-Lost-Failed-to-login-Bad-login.html
https://askubuntu.com/questions/1052883/cant-connect-to-minecraft-server-ubuntu-18-04
https://www.spigotmc.org/threads/solved-server-can-not-reach-mojang-authentication-servers.145023/
https://ubuntuforums.org/showthread.php?t=2293516
https://forums.frontier.co.uk/showthread.php/264367-Unable-to-connect-to-the-authentication-server-during-login