Did you install RPH into the and not the "Plugins" folder?
The most direct fix is to tell Windows that you trust the specific files in your GTA V folder.
Under "Virus & threat protection settings," click .
Repeat this process for any other RPH-related DLLs or plugins you recently installed. Method 2: Adding an Exclusion to Windows Defender
Open the and type "Windows Security," then press Enter. Go to Virus & threat protection .