Altium Designer installer in win7 mode fails reporting "KB2670838" and "KB3140245" updates are not installed. With this patch the installer starts successfully.
(Though I could of course change windows version to win10 to work around this, it might be useful to see if the installer installs maybe less newer/other components in win7 mode.)
-- v5: wbemprox: Add two hotfixid's for Windows 7 to Win32_QuickFixEngineering.