: If you have previously used mods to bypass anti-cheat, locate args.txt in your main GTA V directory and move it to your desktop or delete it.

Many "authentication" or "initialization" errors occur because the Rockstar Games Launcher loses sync with Steam or Epic. Authentication Fix : Completely exit all launchers. Open the Rockstar Games Launcher

Running the game as an administrator can resolve issues related to permissions and file access.

: Some users find success by deleting specific large files like x64a.rpf and x64b.rpf in the installation folder, then restarting the launcher to re-download them cleanly. 2. Boosting Slow Download Speeds