Open your steam/rockstar game library and go to the directory where Red Dead Redemption 2 is installed.
If you are using mods that alter base files (like an RDR2.exe crack), the game might show this error. The solution is often to update the Script Hook RDR2 to the latest version. RD2.7z
Drag and drop the extracted files/folders (such as ModLoader or .asi files) directly into your RDR2 main directory. Open your steam/rockstar game library and go to
Right-click RD2.7z and select "Extract Here" or "Extract to [Folder Name]" using 7-Zip. RD2.7z
Example Path: C:\Program Files (x86)\Steam\steamapps\common\Red Dead Redemption 2