Troubleshooting

Fix missing mods after MRPack conversion

A browser-based converter can read your MRPack locally, but some file hosts may block direct browser downloads. The failed downloads report tells you exactly what to add.

Why files can be missing

The download host blocks browser requests with CORS rules.
The file URL in the MRPack manifest is expired or unavailable.
The mod is client-only or server-only and your launcher expects a different environment.
The file hash check fails because the remote file changed.

How to fix it

Download the failed downloads report from the converter.
Open the JSON file and copy each listed download URL.
Download the missing files from the original host when allowed.
Place mod JAR files into the mods folder.
Launch the pack again and check the Minecraft log for any remaining missing dependencies.

Tip: if several files fail from the same host, the pack may still be valid. The browser is often the blocked part, not the modpack itself.

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