- In Steam, confirm which Project Zomboid branch is active and compare it with the Workshop compatibility tag.
- Let Steam finish the Workshop download, restart Steam and the game, and check the Mods menu again.
- Do not copy Workshop folders into
Zomboid/mods; that user folder is for manual installs. - For a manual mod, locate the folder containing
mod.infoandmedia, or the author’s Build 42 version folder, and remove extra archive wrappers. - If the mod appears globally but not in one world, enable it from that save’s Mods options.
Read the log before clearing anything
Open console.txt and search the startup section for the Mod ID, “not found,” missing required items, or an unsupported structure. That evidence tells you whether the failure is a download, dependency, build, or folder issue.
Sources
The Indie Stone support: mods missing from the menu — Official support case showing Build and folder differences.
PZwiki: Resolving problems with mods — Official-wiki troubleshooting guide with a version warning.
Steam discussion: Build 42 mods not showing — Community troubleshooting example.