Forum ForumsMembersRecent Posts Forums osAwesome Installation and Se... Old osticket HTTP e... Notifications Clear all Old osticket HTTP error 500 Installation and Setup Help Last Post by nandor 4 years ago 1 Posts 1 Users 0 Reactions 22 Views RSS Posts: 36 nandor Topic starter Mar 17, 2022 1:38 am (@nandor) Member Joined: 4 years ago Hi, I can not open the old osTicket. Browser say: HTTP error 500 Posts: 36 nandor Topic starter Mar 22, 2022 1:31 am (@nandor) Member Joined: 4 years ago The problem was solved. I deteled the osticket backup lite plugin and now, it is works. Reply Share: