In a sudden the target audiences option in SharePoint 2010 web part settings gone missing. I have so far tried:
Any help is much appreciated.
Regards, Alan
We had the same issue and we found a really simple (and stupid) solution that worked. Simply make a minor meaningless edit to your SharePoint's web.config like a space or something and save it. It worked for us. Here's where we found this solution:
For us this issue started when we ran several updates this morning at 2:00 AM and rebooted.