Medal-hook64.dll

Simply put, medal-hook64.dll is a dynamic link library used by the Medal client to intercept and record game data.

The filename tells us two specific things:

When you launch a game with Medal running, this DLL is injected into the game’s process memory. It acts as a middleman, sitting between the game engine (like Unity or Unreal) and the Windows graphics API (DirectX or OpenGL).

When you launch a game with Medal running, the client performs a technique known as DLL Injection. It injects medal-hook64.dll into the memory space of the target game (e.g., valorant.exe, fortnite.exe, or eldenring.exe). medal-hook64.dll

Why? Because in the world of Windows graphics, you can’t just "read" the screen from the outside efficiently while a game is running in exclusive fullscreen mode. To get high-performance, zero-lag video capture, the capture software needs to be on the inside, looking at the frame buffer before it hits your monitor.

Some enterprise versions of Windows lock down DLL injection. Ensure that Medal is running as administrator.

Upload the file to VirusTotal (virustotal.com). Simply put, medal-hook64

The most common issue users face with medal-hook64.dll is antivirus software flagging it as malicious (often as "Trojan.Generic" or "PUP").

This is a classic case of heuristic false positives.

If your antivirus flags this file, it is because the antivirus is doing its job by being suspicious of injection techniques—not because the file is actually harmful. You generally need to add an exclusion for Medal in your antivirus settings to restore functionality. When you launch a game with Medal running,

Because medal-hook64.dll injects code into other running processes (your game), some aggressive antivirus engines may flag it as a potentially unwanted program (PUP) or even a trojan. This is typically a false positive. Medal is open about its hooking mechanism, which resembles behavior used by some malware, hence the suspicion.

Only remove medal-hook64.dll if:

Simply deleting the DLL will break Medal’s in-game capture functionality. To uninstall completely, use the official Medal uninstaller.