Looking for logging into the Prevent Multiple 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 Prevent Multiple site. After that you can login as usual with your login credentials.
https://stackoverflow.com/questions/1727919/how-to-prevent-multiple-logins-in-php-website
https://makitweb.com/prevent-multiple-login-of-same-account-with-php/
https://dzone.com/articles/disable-multiple-logins-same
https://community.servicenow.com/community?id=community_question&sys_id=f130cb61db98dbc01dcaf3231f9619b2
https://www.codeproject.com/Questions/1223742/Prevent-multiple-logins-in-MVC
https://www.codeproject.com/Questions/128494/Prevent-multiple-login-in-asp-net
https://community.auth0.com/t/how-can-i-restrict-multiple-logins/7840
https://moodle.org/mod/forum/discuss.php?d=347231
https://wordpress.org/plugins/tags/prevent-multiple-login/
https://archive.sap.com/discussions/thread/1854524
https://drupal.stackexchange.com/questions/216889/how-to-prevent-multiple-logins-for-administrator
https://www.experts-exchange.com/questions/21320370/PHP-Mysql-prevent-multiple-logins.html
https://www.qub.ac.uk/directorates/InformationServices/Student/StudentComputing/FileStore/Filetoupload,607597,en.pdf