Sims 4 won't launch : TRIED EVERYTHING

I've already gone through all this - the thing is, this isn't one device, it's multiple devices that are having this difficulty, as well it would seem someone else in this thread. Sorry if I sound frustrated, but I've already had to provide my computers DxDiag MULTIPLE TIMES to a varying amount of advisors. I'm not providing it because I already had. The only thing to note is the advisor saying I was missing the following files:

MsiExec.exe
DllHost.exe

I've been told to download these files:

x86: vc_redist.x86.exe
x64: vc_redist.x64.exe

And the issue is the fact that this is across multiple devices, one of which used to successfully run Sims 4. There is also no 'COM Surrogate' error or application visible on the task manager. I still feel like I'm going around in circles.