i have been looking and looking for a fix for the 0x12 error with no answers.
GTA V: Legit
Windows: V.10
https;//runtime.fivem.net/patches/gta_V_Patch_1_0_505_2.exe Error 0x12
Disable your firewall/antivirus.
my antivirus is disabled and my firewall allows it to work through
Worked for me! Thanks, guys 
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