fsxking08 wrote on Aug 14^th, 2012 at 5:41am:

It says 4600, but I have no idea, and I just installed Windows 7 32, so hopefully it might change, if not, its not too annoying

The 4600 signifies that it is version 4.6. ;)

Now try this. Right mouse click on the installer - csp751_4600.exe - and select Run as administrator from the list that pops up. Because it is already installed, you should get an option to Repair or Remove, select Repair. That might fix your problem.

If FSX is installed in either C:\Program Files or C:\Program Files (x86), then you might need to run FSX as an administrator. To do that, navigate to C:\Program Files\Microsoft Games\Microsoft Flight Simulator X (or C:\Program Files (x86)\Microsoft Games\Microsoft Flight Simulator X), find fsx.exe > right mouse click on it > select Properties > select the Compatibility Tab > checkmark (place a tick in the box) beside Run this program as an administrator (under Privilege Level).

I hope this helps you get it working.