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Monster Hunter Wilds

Monster Hunter Wilds Mods: Prepare Backups and Recover from Launch Failures

For preparing to install mods, troubleshooting failures after a mod or update, and returning to the base Steam game.

Edited by Gemnao Editorial Team (Japanese)Last checked 2026-10-18
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The short answer

Back up saves and config.ini before mods. Record added files and the author’s removal instructions. If startup fails, disable and move known mods out, verify official files and compare the base game. After a game update, wait for compatible mod versions rather than assuming an old build remains suitable for online play.

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Key facts

Preserve first
The correct account’s win64_save plus the installation’s config.ini.
Updates and online play
Check the publisher’s current required version; do not assume an arbitrary rollback is supported.
Base-game comparison
Remove known additions, verify official files, then launch without mods.
Japanese language
The game officially includes Japanese; a translation mod is not needed for that language.

Report an issue or a fix

Find your symptom

Start with your symptom. Skip steps that do not apply to your setup.

What you seeWhat to checkGo to
You have not installed a mod yetPrepare data and removal records first.Step 1
Startup fails after mods or an updateCompare the unmodified installation.Step 2
You do not know which mod contributesRestore one verified-compatible mod at a time.Step 3

Fixes, in order

Continue this issue

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Step 1｜Preserve the starting state

Keep save, configuration and modification records distinct.

Time: Several minutes · Risk: low

  1. Exit the game and Steam before copying data.
  2. Identify the matching account’s userdata\<account number>\2246340\remote\win64_save and copy it to a separate dated destination. Verify the copy.
  3. Copy config.ini from the actual game installation separately.
  4. Record mod name, original distribution page, supported game/loader versions, added files and removal instructions.

Results that did not fix the problem help the next reader too.

Step 2｜Compare without mods

A base-game test helps separate modification-related behavior from other failures.

Time: Allow time for verification · Risk: medium

  1. Disable installed mods in their manager, following its documented removal procedure.
  2. Move known manually added files outside the installation rather than deleting unidentified DLLs.
  3. Verify game files in Steam, restart the PC and launch without mods. Verification may restore official files but leave extra files untouched.

Results that did not fix the problem help the next reader too.

Step 3｜Restore one compatible mod at a time

Do this only after the base game can launch.

Time: One comparison per mod · Risk: medium

  1. Confirm the installed game and required loader versions are supported, then restore only one mod.
  2. Launch and repeat the same comparison before adding another.
  3. If failure returns, remove the last addition and record the version and interaction.

After a major update, keep incompatible mods removed until the author supplies a supported version. A working launch is not proof that every save or online interaction is safe.

Results that did not fix the problem help the next reader too.

Avoid

  • Do not install executables or DLLs from an unidentified source.
  • Do not add several mods simultaneously and lose the comparison.
  • Do not skip the save backup.

Important cautions

  • Mods do not create a promise of Capcom support. Review the terms and author’s compatibility/removal instructions.

FAQ

What should I do when a modded game will not start?

Preserve data, disable and move known mods out, verify official files and test the base game. Do not assume verification removes every extra file or launch setting.

Is a Japanese-language mod necessary?

No. The game officially supports Japanese. Check the Steam language settings instead.

Can I keep an older build for a mod?

Publisher update notices can require the current version for online play and content. Do not assume Steam offers a supported rollback. Wait for mod compatibility and check the current publisher requirements.

Sources

English adaptation of the existing Japanese Steam guide. Retains its game-specific paths and community-documented controls without claiming new live-game tests. Versioned update notes describe those releases, not the latest release. Verify current compatibility before changing a driver or using a mod, and preserve original data and settings.

Capcom: historical version 1.042.00.00 updatePCGamingWiki: Monster Hunter Wilds reference retained from the Japanese guideMonster Hunter WildsJapanese version of this page