Whilst trying to find the solution to a problem on one of my UAT servers which prevented IE10 from working with our ASP.NET app, I found an excellent article by Scott Hansleman explaining how to fix it.
One of the developers followed the instructions to fix it in a single project. We tested this, deployed it to UAT and it worked, but Scott's article recommended installing KB2600088.
I don't want to have to install this on any unnecessary machines, so my question is: Do I apply this to each developer's machine, or to my UAT environment?