Vanguard strips handle permissions. If an injector attempts to open a handle to the Valorant process using OpenProcess , Vanguard intercepts the request and blocks PROCESS_VM_WRITE or PROCESS_ALL_ACCESS flags, rendering memory manipulation impossible via Ring 3.
Make your DLL do something visible — show a message box, log to a file, or change notepad ’s window title. dll injector for valorant work
Using a DLL injector with is extremely high-risk due to Riot Games' Vanguard anti-cheat , which operates at the kernel level. How DLL Injection Interacts with Valorant Vanguard strips handle permissions