So, you know how end-users are supposed to get pop-ups saying essentially, ‘IT needs to make changes to your computer’, and then allowing the user to schedule a reboot? Those weren’t working on our site.
The problem was the client setting named “Agent extensions manage the deployment of applications and software updates”. This must be set to false, unless you have some seriously crazy client scripting \ 3rd party application which requires it.
I can’t find the site where changing this to false was suggested. If that was your blog or forum post, leave a comment and I’ll cite accordingly.