PLEASE RUN THE GAME AS ADMINISTRATOR
Please make sure that you use "Run as Administrator" to install and to start the game (right-click on the shortcut or setup file and select "Run as Administrator").
Please note: This doesn’t apply if you are running the game via Galaxy.
WHITELIST THE SETUP IN YOUR SECURITY SOFTWARE
Please add the setup executable to your anti-virus/firewall software's exception/trusted list. Simply disabling firewall or AV software could not be enough, since some of these software are running still in background or in services list.
SET DEP TO DEFAULT SETTINGS:
Please make sure that DEP (Data Execution Prevention) is using its default setting. To do this, follow these steps:
I) Open Menu Start
II) Right click 'Computer' and click 'Properties'
III) Click 'Advanced system settings'
IV) Open tab 'Advanced' and click 'Settings' in 'Performance' section
V) Open tab 'Data Execution Prevention'
VI) Change DEP setting to the first option (Turn on DEP for essential Windows programs and services only)
VII) Confirm with OK.