Looking for logging into the Joomla 3.6.5 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 Joomla 3.6.5 site. After that you can login as usual with your login credentials.
https://forum.joomla.de/thread/5281-probleme-nach-update-von-joomla-3-6-5-auf-3-8-5/
https://forum.joomla.org/viewtopic.php?t=943735
https://downloads.joomla.org/de/cms/joomla3/3-6-5
https://www.joomla-bugs.de/forum/index.php?topic=633.0
https://joomla.stackexchange.com/questions/4957/unable-to-log-in-after-upgrading-joomla-2-5-to-3-0
https://github.com/joomla/joomla-cms/issues/11465
https://www.joomshaper.com/forums/unable-to-update-joomshaper-joomla-3-7-3-to-3-7-5-error-invalid-login
http://www.inmotionhosting.com/support/edu/joomla-3/getting-started/login-dashboard
https://www.regularlabs.com/forum/iplogin/45048-modals-not-available-in-mobile-device-joomla-3-6-5
https://www.siteground.com/tutorials/joomla/how-to-login/
https://www.itoctopus.com/registration-form-redirects-to-login-form-on-joomla-3-6-5
https://www.fc-hosting.de/joomla/migration2.5-3.php
https://www.joomforest.com/help/forum/jf-login/8260-jf-login-does-not-work-in-later-versions-of-joomla