Sudden logout from TYPO3 Backend (TYPO3 CMS 8.5.1)

Question

Hi TYPO3 CMS Administrators, Editors and Developers.

Recently I encountered some weird behavior in the latest TYPO3 CMS 8.5.1. Sometimes I suddenly get logged out from the backend. I couldn't figure out any pattern when this occurs. Sometimes I get logged out when I try to save a page, sometimes it's when saving a TypoScript template, sometimes it happens when I switch from one module to another. And before you ask: no, it's not the regular session timeout! It happens within minutes after logging in.

So, I'd just like to know if this has happened to someone else or if it's even a known bug in TYPO3 CMS 8.5.1? If you even know how to get rid of this, or things I should check, I'd appreciate your help! :)

About the Webserver:

• Debian 8.6
• Apache 2.4.10
• PHP 7.0.14
• TYPO3 CMS 8.5.1

Thanks and happy coding

Answer 1

All you need to do is go to the install tool and find the lockIP option and replace it with 0. (default 4).

Best regards