Download & Releases

5.1.2 (stable)

Release 5.1.2 has been published at January 27, 2016

Instructions for updating ILIAS can be found in section 3 of the general installation instructions. For major updates (e.g. 4.4.x -> 5.0.x) the safest proceeding is, to upgrade a copy of your productive system first and test whether everything works ok.

If you use a customized skin/style, please change the skin settings for root user and default of installation to ‘delos‘ before upgrading from a 4.x version to 5.1.x. Otherwise you may not login any more due to templates changes in 5.0 and 5.1.

ILIAS is free, open source software and published under the GNU General Public License (GPL).

Known Issues

Return-Path in Mail : Up until ILIAS 5.0, the mail system did not set an explicit return-path header for outgoing mails. It was necessary that the host was configured to set this value on OS-level. With the implementation of HTML-brackets/-envelopes for mails in ILIAS 5.1, a new PHP mailer library was introduced that sets this value by default - unless ordered to do otherwise - to the given FROM-address.
This has lead to issues with e.g. spam filters. In order to address that, a new configuration option was created with ILIAS 5.1.5 that allows to set the return path which is then used from the mailer. Since this setting has no meaningful default that is valid for all platforms, please make sure to set this option.

Fixed Bugs

The following reported bugs have been resolved:


* #0017899: [Mail] Missing lang vars in mail templates (jluetzen)
* #0017756: [My Workspace] German lang file: Diese Objekt ist ohne Registrierung sichtbar. (jluetzen)
* #0017886: [Groups] Fatal error when removing a group member with activated auto fill (jluetzen)
* #0017882: [Booking Tool] Schedule->Availability: No slots available if availability and todays date is the same (jluetzen)