[mazex]

And another possible solution as I don't have my Windows 8 machine here at home (but installing on a laptop as we speak ).

In the Steam folder for CloD (..\steamapps\common\il-2 sturmovik cliffs of dover) there is a file called "63950_install.vdf" that contains the information below. How about trying to remove the part that is about installing the C++ redist? That might work? That is - remove the whole section with "VCRedist".

"InstallScript"
{
	"Run Process"
	{
		"DirectX"
		{
			"process 1"		"%INSTALLDIR%\\redist\\DirectX\\DXSETUP.exe"
			"NoCleanUp"		"1"
			"command 1"		"/silent"
		}
		"VCRedist"
		{
			"process 1"		"%INSTALLDIR%\\redist\\VCRedist\\vcredist_x86.exe"
			"NoCleanUp"		"1"
			"command 1"		"/Q"
		}
		"GDFInstall"
		{
			"process 1"		"%INSTALLDIR%\\redist\\GDF\\GDFInstall.exe"
			"command 1"		"/silent /installpath \"%INSTALLDIR%\" launchergdf.dll"
		}
		"DotNetFx40_Client"
		{
			"process 1"		"%INSTALLDIR%\\redist\\DotNetFx40_Client\\DotNetFx40_Client_x86_x64.exe"
			"NoCleanUp"		"1"
			"command 1"		"/passive /showfinalerror /promptrestart"
			"IgnoreExitCode"		"1"
		}
	}
	"Run Process On Uninstall"
	{
		"GDFUnintall"
		{
			"process 1"		"%INSTALLDIR%\\redist\\GDF\\GDFInstall.exe"
			"command 1"		"/silent /u /installpath \"%INSTALLDIR%\" launchergdf.dll"
		}
	}
}
"kvsignatures"
{
	"InstallScript"		"97740562954e36bc348aa61246de2c0aea013345248f3da2b649fd1d9d445f27abe0e2b5a50d3b17033ca9f15282334387556694fa2ac05c57aacb18fc02cbd51b11e160e331a8b9b3c7db870ed29cdee2438c2e7937f45ff272198408128d4a3176d73b5eead7ac78bb2e3138736a67ac8d04b812edda319bf5f3d5c0a0c37f"
}