Hi Alan,

Yes as part of all the Facetoface timezone changes in 2.2.15 we tried to improve the compatability of the iCals across as many of the main calendar applications as possible, so there will be big differences between 1.1 and 2.4!

Unfortunately MS Outlook not only never implements the iCal standard properly, it implements it very inconsistently from one Outlook version to the next, and even the latest versions still do not accept multi-day iCals despite it being part of the standard and implemented by most other calendar apps.

There is not much we can do about this as we here in Totara Core have no idea what version of Outlook is being used in a particular end-user installation. We can usually only try to make sure that the iCals do not break in most of the Outlook versions likely to be used, while still trying to take advantage of features in other calendar applications like Google, when we can.

That said, I'm sure the community would be interested in customisations to F2F, where the changes have been made to try and take advantage of Totara implementations where all staff will be using the same calendar client, if anyone has done it before.