GCSGrand Theft Auto V setup guide
Yari
Installation and Configuration Guide
Only follow this guide if your order email says Yari.
Wrong product? ChangeNot compatible with ASRock motherboards
Yari's developers confirm that every ASRock motherboard runs into problems with Yari: some PCs get a blue screen (BSOD) when injecting, others become unstable. To check your motherboard, press Win + R, type msinfo32 and look at “BaseBoard Manufacturer”. If it says ASRock, do not activate your key and contact support first.
Where your key goes
yari.one
Sign in (or Sign Up), then paste the key into “Redeem License Key” on the dashboard.
Do not enter this key on undetek.com or any other product's website. It will not work there.
Activation
- Create Account: Go to https://yari.one/, click Sign In and create an account (Sign Up).
- Your key goes here Redeem Key: On the Yari dashboard, paste your key into Redeem License Key and click "Redeem Key". The key is exactly 32 characters (A–Z, 0–9).
System Preparation
- Disable Secure Boot: Restart your PC and press your BIOS key as it boots (usually F2, DEL, ESC or F12). Open the Security or Boot tab, set Secure Boot to Disabled, set Boot Mode to UEFI, then save and exit. If BitLocker is enabled and you do not have your recovery keys, turn BitLocker off before you touch Secure Boot.
- Disable Fast Startup: Open Control Panel → Power Options → Choose what the power buttons do → Change settings that are currently unavailable, untick Turn on fast startup and save changes.
- Disable Smart App Control: Open Settings → Windows Security → App & Browser Control → Smart App Control and set it to Off. Windows may ask for a restart.
- Disable Antivirus & Firewall: Open Windows Security → Virus & Threat Protection → Manage Settings and turn Real-time protection off. If needed, go to Firewall & Network Protection, select your active network and turn the firewall off (only needed on certain ISPs).
- Disable Core Isolation: Open Windows Security → Device Security → Core Isolation Details and turn off Memory Integrity, Kernel-mode Hardware-enforced Stack Protection and Microsoft Vulnerable Driver Blocklist. Restart if prompted.
Launch & Injection
- Download Launcher: Click Download launcher on the dashboard, then add it to your antivirus exclusions: Windows Security → Virus & Threat Protection → Manage Settings → Exclusions → Add an exclusion → File, and select the Yari launcher.
- Run as Administrator: Right-click the launcher, choose "Run as administrator" (every time) and sign in with your Yari account.
- Load & Restart: Click Load and allow the PC to restart when the launcher asks.
- Load Again: After the restart the launcher reopens on its own. Click Load a second time.
- Wait: Wait for the launcher to close by itself. That means the injection is prepared.
- Start GTA V: Now start Grand Theft Auto V. Injection happens automatically. Open the menu with END or INSERT.
Troubleshooting
The launcher never closed on its own: Core Isolation is usually still on. Memory Integrity or the driver blocklist blocks the load.
Windows deleted or blocked the launcher: Real-time protection put it in quarantine. Add it to your exclusions and download it again.
Sign in works but Load does nothing: start the launcher with Run as administrator, every time.
The game runs but no menu appears: the launcher has to close by itself before GTA starts. If it was still open, load again and wait.
It failed straight after a BIOS change: Secure Boot often turns itself back on after a BIOS update or reset. Check it is still disabled.