Monster Hunter Frontier Z on Windows

Mezeporta launcher and the Hunsterverse server, nothing else.

Tested with Mezeporta v1.5.4 and Windows 10/11. Launcher by LilButter, client patch by EclipseKnight. For the Linux version, see the Linux guide.

1. What you need

• Windows 10 or 11, 64-bit.
• The MHF-Z client, the folder named Monster Hunter Frontier Online (about 5.5 GB), containing dat/, mhf.exe, mhfo.dll, mhfo-hd.dll, mhl.dll and mhf.ini.
• About 8 GB of free space on the drive you install to.
• Your Hunsterverse account, registered at hunstermonter.net. You type the username and password yourself.

Where to get everything.

2. Put the client in place

Copy (do not move) your client folder to C:\Games\MHFZ, so that dat and mhf.exe sit directly inside it:

3. Apply the client patch

Open PowerShell and run this. It downloads the client patch, backs up the five files it replaces, then overlays the new ones.

$game = "C:\Games\MHFZ"

# 1. back up the files the patch replaces
New-Item -ItemType Directory -Force -Path "$game\original-files\dat" | Out-Null
Copy-Item "$game\mhf.exe","$game\mhfo.dll","$game\mhfo-hd.dll","$game\mhl.dll" `
  "$game\original-files\" -Force
Copy-Item "$game\dat\mhfdat.bin" "$game\original-files\dat\" -Force

# 2. download and unpack the patch
$patchUrl = "https://github.com/EclipseKnight/hvmhfz.eclipseforge.xyz/releases/" +
            "download/client_patch/Frontier_Patch.zip"
$zip = "$env:TEMP\Frontier_Patch.zip"
Invoke-WebRequest -Uri $patchUrl -OutFile $zip
Expand-Archive -Path $zip -DestinationPath "$env:TEMP\Frontier_Patch" -Force

# 3. copy the patch over the game
$src = "$env:TEMP\Frontier_Patch\Frontier_Patch\*"
Copy-Item $src -Destination $game -Recurse -Force

The patch replaces exactly five files: mhf.exe, mhfo.dll, mhfo-hd.dll, mhl.dll and dat\mhfdat.bin. The copies in original-files\ let you restore the original client at any time.

4. Install the launcher

Download Mezeporta-Windows.zip from the releases page and extract it into the same folder:

$mpUrl = "https://github.com/LilButter/Mezeporta/releases/" +
         "download/v1.5.4/Mezeporta-Windows.zip"
$mpZip = "$env:TEMP\Mezeporta-Windows.zip"
Invoke-WebRequest -Uri $mpUrl -OutFile $mpZip
Expand-Archive -Path $mpZip -DestinationPath "C:\Games\MHFZ" -Force

Afterwards Mezeporta.exe and the Mezeporta folder must sit next to dat, not inside a subfolder. If the zip unpacked into a nested folder, move the contents up one level.

Also install these two Microsoft runtimes, which the game engine needs:

• Visual C++ 2015-2022 Redistributable, x86: vc_redist.x86.exe
• DirectX End-User Runtime (June 2010): microsoft.com/download/details.aspx?id=35

5. First run

Double-click Mezeporta.exe. The first window has no server configured yet:

Open Configure Settings if you want to change the theme or language. On Windows there is no Wine prefix to configure, so the Linux-specific options do not apply.

6. Add the Hunsterverse server

Press ADD A SERVER and enter:

7. Log in and play

Select Hunsterverse in the Server Selection dropdown, type your own account name and password, and press LOG IN. Choose a character, then launch.

No account yet? Type the username and password you want and press LOG IN: Hunsterverse creates the account on your first login. You can also register at hunstermonter.net first, which is the safer route if the login is refused.

The launcher window closes when the game starts. That is normal. The game window is titled MONSTER HUNTER FRONTIER Z.

8. Troubleshooting

9. Files and folders

Appendix: English text and language

MHF-Z is a Japanese game. The English translation is not a separate installer: it lives inside mhl.dll, the client's text layer, and that one file decides which language you see.

What the client patch already does. The Hunsterverse patch ships its own mhl.dll, so a normal install from the patch step is already translated. If your menus are English, you are done and should leave this file alone.

If your game is in Japanese. Your source client was untranslated, or something overwrote the patched DLL. Translation packs ship alternate builds of the same file. The pack this guide was written from contains two, mhfz_mhl.dll_custom and mhfz_mhl.dll_og. Swap the custom build in, keeping the server build safe:

cd C:\Games\MHFZ
Copy-Item mhl.dll mhl.dll.server
Copy-Item "C:\path\to\client pack\mhfz_mhl.dll_custom\mhl.dll" mhl.dll -Force

In that pack the _custom folder is the modified build to try first and _og is the untouched original. Folder names vary between packs, so use whichever pair came with yours.

If the game stops connecting after a swap, put mhl.dll.server back. The server patch build is what Hunsterverse expects, and a translation build from a different client version can be rejected.

Coverage is partial. Community translation updates do not translate everything. Item names, NPC dialogue and event text often stay Japanese even with the English DLL in place. That is the translation, not a broken install.

Fonts. If Japanese text shows as boxes, install noto-fonts-cjk and start the launcher with LANG=ja_JP.UTF-8 on Linux, or add the Japanese language pack on Windows (Settings, Time and language, Language and region, Add a language).

Appendix: Discord linking and bot commands

Linking your game account to Discord gives you character backups and the bot commands. The account page does the linking:

1. Open hvmhfz.eclipseforge.xyz.
2. Sign in with the same username and password you use in the game.
3. The page shows a command such as !f link <token>. Run it in the #mhfrontier channel of the Hunsterverse Discord.

Once linked, these commands work through a DM with the bot, except where noted: