Looking for logging into the Joomla Update Error Invalid 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 Update Error Invalid site. After that you can login as usual with your login credentials.
https://www.joomla-bugs.de/forum/index.php?topic=633.0
https://forum.joomla.org/viewtopic.php?t=919664
https://forum.joomla.de/thread/929-invalid-login-beim-udate/
http://www.joomlaportal.de/joomla-3-x-installation/310793-automatisches-update-error-invalid-login.html
https://github.com/joomla/joomla-cms/issues/11465
https://github.com/joomla/joomla-cms/issues/23201
https://github.com/joomla/joomla-cms/issues/18270
https://www.joomla-tips.org/joomla-troubleshooter/error-invalid-login-during-joomla-upgrade.html
https://joomla.stackexchange.com/questions/21460/invalid-login-when-attempting-to-update-joomla-3-4-8-to-3-7-5
https://www.joomshaper.com/forums/can-t-update-joomla-core-and-some-extensions-after-installing-quickstart-calcio-template
https://www.mehr4u.de/joomla-update-3-x-auf-3-8-2.html
https://forum.alfahosting.de/index.php?page=Thread&threadID=1870
https://www.facebook.com/joomla/posts/joomla-update-error-invalid-login-/10151747451244667/