Highly compressed versions of GTA 5 (e.g., 2GB or 300MB versions) are not official and frequently contain or non-functional files. Official versions of GTA 5 require roughly 105 GB to 120 GB of storage space.
The Reality: Highschool Technical Gamer / Similar RAR 1 Issues gta 5 by highschool technical gamerrar 1 invalid password
To avoid encountering the "invalid password" error on HighSchool Technical Gamarrer 1 in the future: Highly compressed versions of GTA 5 (e