stefan2k on "iCal feed - trigger outlook sync"

Hello everybody!

I provide an iCal file within an wordpress feed. In the admin panel the user can set some settings for this file (which events, time restriction etc...).

The problem:

changed settings (for example exclusion of a post type) are not synchronized until a new post is published.

What I already tried:

I tried to re-generate the ical file when settings are changed but outlook still does not syncs as there are no new posts.

I tried to post and delete a "dummy-post" which again does not trigger a synchronization except one skips the delete.

I'd appreciate any hints as how to manually trigger an outlook synchronization on admin-option update.

Thanks in advance,
Stefan