Hello, I recently download FiveM, but I have a “Authentication Error” : “The Social Club account specified (name of my account) does not own a valid license to Grand Theft Auto V.”
I heard this problem came when we have a crack copy of the game but i have legit copy.
So i came here to know if someone could help. 
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same here legit copy
Yeah I’m having the same issue. Have a legit copy since day 1 PC version dropped. But I also have the disc version of it.