If the wizard crashes or fails, try these verified fixes from Rockstar Support :
To avoid malware or corrupted files, you should only obtain the GTA V setup files from verified official sources: Gta V Setup Wizard
Open your chosen launcher (Steam, Epic , or Rockstar ) and click "Install". For disc versions, double-click setup.exe . If the wizard crashes or fails, try these
Before launching the wizard, ensure your PC meets the minimum or recommended requirements to prevent the setup from failing mid-process: Requirement Minimum (Legacy) Recommended (Enhanced) Windows 10 (latest update) Windows 11 CPU Intel Core 2 Quad Q6600 Intel Core i5-9600K / Ryzen 5 3600 RAM 16 GB Dual-Channel Storage 105 GB HDD/SSD 105 GB DirectStorage-compatible SSD GPU NVIDIA 9800 GT 1GB NVIDIA RTX 3060 (8GB) 3. Steps to Use the GTA V Setup Wizard Steps to Use the GTA V Setup Wizard
The Official Client allows you to download and manage the game directly from the developer.