You know how when you play a game on Steam for a first time, Windows will ask if you want to allow the program to make changes to the computer and then Steam installs some stuff that's required to play the game? Well, that happens to me EVERY SINGLE TIME I start Dishonored. Why?!?!

Yeah, happens to me too. A bit annoying

Try restarting. Normally some changes only register after a restart.

If it still happens, manually uninstall DirectX and whatever else steam is installing. Then let steam install all of the required runtimes. If it still happens then manually reinstall DirectX.

The only thing it seems to be installing over and over again is something called msiexec. What is it and how do I uninstall it?

Unless I'm mistaken msiexec is the system Win XP uses for installing programs. Doesn't make much sense for steam to be installing an installer.

It's not only used for Windows XP, it's used for newer Windowses as well (windows 7 x64 include both 32bit and 64bit versions). And it's probably being installed because of one of the other 4 programs that are installed the first time you run the game probably use it.

Anyway, I'm speculating it might be related to running non-english versions of Windows (using swedish Windows 7 64bit Home Premium here) and it somehow cause a conflict with the msiexec installer which might be english only or something so it's never installed. Or it might be that Windows 7 SP1 already include a newer version of msiexec so it's never installed because of that. And yet it tries to be installed over and over and over again, each time the game is started. So yeah, a bit annoying

Could it have something to do with the fact that I'm using Windows 8 release preview at the moment?