I don't think its defender cause I don't have it turned on I'm using the payed version of malware bytes. Or at least I don't think that it is. I know windows has that annoying thing of turning things on regardless of users wishes.It also could be that, Defender doesnt know how to seek inside 7zips.. which is why that works so far. .but that doesnt mean that once its extracted, if its then scanning the extracted files that its quarantining something that the game needs.