Metal Gear Solid V The Phantom Pain Fix For Windows 11 Portable -

If you are running the game from an external SSD, HDD, or a copied folder structure, Windows 11 treats these files as "foreign" due to execution policies. You must bypass these restrictions before launching.

The default launcher (mgsvtpp.exe) tries to phone home to Konami servers. For a portable setup: If you are running the game from an

Result: Instant boot time, no “Failed to connect to server” nag, and no registry writes. Result: Instant boot time, no “Failed to connect

Unlike Windows 10, Win11 has stricter driver enforcement, core isolation (HVCI), and full-screen optimization issues. Here are the three major bugs you will hit: Result: Instant boot time

MGSV’s physics engine breaks above 60 FPS (crawling speed glitch). Use RivaTuner Statistics Server (RTSS) to cap at 60 FPS.

Save this as Launch_MGSV.bat in the game folder:

@echo off
set compatibility=Windows8
reg add "HKLM\Software\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers" /v "%~dp0mgsvtpp.exe" /t REG_SZ /d "WIN8RTM" /f
start mgsvtpp.exe

This sets compatibility mode temporarily without global changes.