Can’t save ics, vcs or vcf–files to a network share

I’m trying to save an appointment as an ics-file but it doesn’t seem to be working.

When choosing the Save As function, I’m able to browse to where I want to save it, name it and even press Save. However, when I then go to that location, the saved ics-file isn’t there.

I repeated the operation to make sure I did try to save it in that location, but again nothing showed up. I didn’t even get an error. I tried it with a different appointment and I got the same results.

Why can’t I save my appointments as an ics-file?