ModManFX manages your mods for all games, handles all necessary file backups with a single click, and automatically resolves file conflicts.
It always restores the original vanilla game file, even if several mods overwrite the same file.

ModManFX includes dedicated features for MSFS 2020, MSFS 2024, Starfield, Cyberpunk 2077, and Valheim.
For MSFS, it uses symbolic links to install mods.
For Starfield, it manages both the game folder, the documents folder, and the Starfield.ini file.

📦 Archive File Formats

Supported archive formats: .zip
For mods in .rar or .7z, ModManFX will extract them automatically and create a folder in:

Code

.\ModManFX\profiles\YOUR_PROFILE_NAME\mods

Examples:

• D:\ModManFX\profiles\FS2020\mods\MOD_NAME
• D:\ModManFX\profiles\Starfield game\mods\MOD_NAME
• D:\ModManFX\profiles\Valheim\mods\MOD_NAME

🔓 Fully Unlocked Features for All Users

All features are free for everyone.
You may donate via PayPal to support sustainable development.

Important note:
ModManFX is free — if you don’t like it, simply don’t use it.
The wonderful world of the internet lets everyone find the tool that suits them best.

ModManFX is a portable application.

1. Extract the ZIP archive.
2. Place ModManFX64.exe anywhere on your hard drive.
   Do NOT place it in:

   • \Windows\...

   • \Program Files\...
   • Your game folder
     Recommended: your_drive:\ModManFX\ModManFX64.exe
3. Launch the application.
   Windows may display a blue “Unknown product” warning — simply bypass it.
4. On first launch, ModManFX will automatically create its subfolders.

Some antivirus programs may warn you due to the use of shell command utilities (https://www.autoitscript.com/site/).

To update:
Just overwrite ModManFX64.exe. Nothing else is required.

If MSFS is installed on a non‑NTFS drive (e.g., FAT or exFAT), symbolic link installation is not possible.
ModManFX will fall back to classic file copy mode, which is slower.

1 — First Launch

ModManFX will ask you to create a profile.
Click Add FS20xx in the Game Profile menu, then select your MSFS Community folder.
You may rename the profile.
It will then ask you to add your first mod (optional at this stage).

3 — ZIP Files or Folder Mode

If you allow ModManFX to unzip archives, you never need to worry about ZIP structure.
ModManFX detects the correct subfolder automatically.

If you disable auto‑unzip, ZIP files must have a correct internal structure.

4 — Sorting Mods with Categories

For MSFS, you can sort mods by type, model, subtype, continent, country, or state (right side of the interface).
This allows you to install/uninstall all European mods, or all mods from a specific country, with one click using the treeview browser.

Multi‑selection with CTRL and SHIFT is supported.

5 — Purging MSFS Cache (Automatic or Manual)

Purging cache improves MSFS stability.

Added menu items:

• Tools → MS Flight Simulator — Purge sceneries cache now
• Tools → MS Flight Simulator — Purge packages cache now

Added automatic options:

• Options → Purge sceneries cache automatically
• Options → Purge packages cache automatically

If enabled and MSFS is not running, cache is purged automatically whenever you install or uninstall a mod.

You may also choose to delete cache directly instead of using the recycle bin.

9 — GSX Pro Profile Management

• Use ... to add a GSX profile for the selected airport (.ini, .zip, .rar, .7z supported).
• Use Edit to modify the selected profile.
• Use X to remove a profile.
• Use the combo list to associate a profile with an airport.
• You can store a GSX profile web URL for manual update checks.
• Installing an airport installs its GSX profile to:
  C:\Users\your_name\AppData\Roaming\virtuali\GSX\MSFS
• Uninstalling removes it.

ModManFX checks if the GSX profile matches the airport.

For other simulators supporting GSX Pro:

• Add gsw=1 in profiles.ini
• Add gsx_profile_dir = path to define the GSX directory

ModManFX manages mods for both:

1. Starfield game folder
2. Starfield documents folder
   Two profiles — switch with one click.

1 — First Launch

Click Add Starfield in Game Profile.
Then:

1. Add Starfield documents folder (C:\Users\YOU\Documents\My Games\Starfield).
2. Add Starfield game folder (select Starfield.exe).
3. Name each profile.
4. Optionally add your first mod.

You now have two separate Starfield profiles.

2 — BA2 File Management

When installing BA2 files, ModManFX automatically adds required entries to Starfield.ini or StarfieldCustom.ini.
When uninstalling, entries are removed.

Even if the Data folder is missing in the archive, ModManFX installs files correctly.
It also handles incorrect root folder structures in most cases.

3 — StarfieldCustom.ini

ModManFX automatically creates:

Code

bInvalidateOlderFiles=1
sResourceDataDirsFinal=""

You can install/uninstall individual files using the Mod Files tab (multi‑selection supported).

1 — First Launch

Choose a game in Game Profile, then add your first mod.

2 — Each Launch

If the mod list is empty, ModManFX will ask you to add a mod.

3 — Adding Mods

Use D1, D2, or D3 buttons — the safest method.
You may enter the mod’s home URL (optional but useful for update checks).

Updating a mod preserves all your sorting and metadata.

4 — Custom Mod Folder Locations

You can define up to three mod folders (D1, D2, D3).
Paths can be edited in profiles.ini.

Colors:

• Red = invalid path
• Green = valid path

You can move mods between folders anytime — just restart ModManFX or click Refresh Mod List.

5 — Sorting Mods

Use the dropdown lists (MSFS only).
Changes are saved instantly.
You can add personal notes.

6 — Refreshing Treeview Browser

Click Refresh by countries/type/etc to update the treeview.

7 — Mod Evaluation

Rate mods using the evaluation checkboxes.

8 — Screenshots & Readme

ModManFX displays included .txt, .jpg, and .png files in dedicated tabs.

9 — Blocked Mods

Blocked mods are excluded from automatic treeview installation.
They appear with a purple square.

10 — Custom Combo List Entries

Create *.ini.custom files to add custom entries.
They are preserved across updates.

11 — Treeview Colors

• Black = selected
• Blue = all mods uninstalled
• Yellow = some installed, some not
• Dark green = blocked mod not installed
• Light green = all installed

12 — Custom Mod Folders (Duplicate Section)

Same as section 4.

13 — Mod Preset List

Save presets from selected mods.
Load presets later — missing mods are listed.
You can add selected mods to an existing preset.

ModManFX displays .jpg and .txt files found anywhere inside the ZIP.
Place ZIP archives or mod folders in:

Code

...\ModManFX\profiles\YOUR_MSFS_PROFILE\Mods

ZIP and RAR files can be extracted automatically (ModManFX will ask).
Using IMPORT MOD is the safest method.