Looking for logging into the Otrs Upgrade Not Working 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 Otrs Upgrade Not Working site. After that you can login as usual with your login credentials.
https://doc.otrs.com/doc/manual/admin/6.0/en/html/updating.html
https://doc.otrs.com/doc/manual/admin/5.0/en/html/upgrading.html
http://www.google.de/url?url=http://doc.otrs.com/doc/manual/admin/4.0/en/html/upgrading.html
https://www.ictforce.be/2017/otrs-upgrade-5-to-6/
http://www.google.de/url?url=http://lists.otrs.org/pipermail/otrs/2012-September/038516.html
https://forums.otterhub.org/viewtopic.php%3Ft%3D25431
https://www.youtube.com/watch%3Fv%3DFmyoVXkkaoM
https://www.consistec.de/otrs/customer.pl
https://github.com/zammad/zammad/issues/368
https://www.biosolveit.de/otrs/
https://groups.google.com/forum/%23!topic/otrs_archive/DqqcQwsgtCM
http://www.google.de/url?url=http://help-data.indepth-network.org/otrs/customer.pl
https://wikitech.wikimedia.org/wiki/OTRS