December 12, 20214 yr I got stuck on this for a bit while setting up a new computer so new players might come across it too. When you use TonyE's game launcher (and everyone should, it makes life so easy) you might get an error message saying the serial number can't be validated and contact Matrix Games. To solve this you might need to start launcher from a shortcut and alter the shortcut advanced settings to run as administrator. Don
December 12, 20214 yr Don, Open HCE using Run As Administrator not using the Launcher. After that you shouldn't get that error again when launching HCE with the Launcher. Let us know what happens. Eric
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