42.13.2|Jan 19, 2026
View on Steam↗42.13.2 UNSTABLE HOTFIX Released
3/5 Moderate
Project Zomboid hotfix 42.13.2 resolves critical zombie migration issues, enables multiplayer plastering, and fixes broken body temperature mechanics.
Key Changes
- 1Fixed erroneous zombie migration behavior
- 2Added Plastering and functional Drying Racks to Multiplayer
- 3Fixed body insulation and temperature always being at 0
- 4Resolved server crashes caused by pipe bombs
- 5Fixed weapons unequipping when climbing through windows
- 6Fixed animal pathfinding and zone performance in MP
- 7Fixed backpack sprayer duplication exploit
- 8Fixed claustrophobic trait not triggering panic
- 9Fixed being unable to craft Fire-Hardened Spears
- 10Fixed memory leak related to NetworkState packets
All Changes
🌐Multiplayer(6)
- newWhitelist: Implemented a new and improved server whitelist system.
- newDrying racks: Drying racks are now fully functional in multiplayer sessions.
- newAnimalUpdatePacket: Added a limit on the number of animals sent in a single AnimalUpdatePacket to improve network stability.
- newPlastering: Enabled the Plastering mechanic for multiplayer.
- fixStatus Effects: Fixed issues with Soaked and Wet states not syncing correctly in multiplayer.
- fixRemote player: Resolved health synchronization issues for remote players.
🧟Gameplay(14)
- fixZombie: Fixed an ongoing issue with erroneous zombie migration patterns.
- fixBattery: Fixed the inability to remove and replace batteries in different devices.
- nerfContainers: Fixed an exploit allowing players to put more items in a container than its capacity allows.
- fixWeight: Fixed weight pointers to ensure accurate encumbrance tracking.
- fixFarming: Fixed plant tiles only updating after a chunk is revisited or the player relogs.
- fixSeeded furrows: Fixed the inability to remove seeded furrows.
- nerfBackpack sprayer: Fixed an exploit involving backpack sprayer duplication.
- buffBody temperature: Fixed a critical bug where body insulation and temperature were always at 0.
- buffWeapons: Fixed weapons automatically unequipping when a character climbs through a window.
- fixStove: Fixed microwave and stove timers resetting to 0 unexpectedly.
- fixInventory: Fixed the wrong items being selected and captured when interacting with a stack of items.
- nerfClaustrophobic: Fixed the claustrophobic trait not causing panic when the character is inside buildings.
- fixClothes: Fixed clothes only drying when they are picked up by the player.
- nerfBombs: Fixed an exploit where bombs would stay in the player's inventory after relogging.
🐄Animals(5)
- changeAnimal: Updated the 'Announce Animal Death' notification message.
- fixAnimal: Fixed animal pathfinding issues specifically in multiplayer.
- fixAnimal corpse: Fixed the inability to retrieve an animal corpse from a car trunk.
- fixRope: Fixed ropes attached to animals failing to break when they should.
- fixAnimal corpse: Fixed the inability to butcher an animal corpse while it is in the player's inventory.
🔨Building & Crafting(8)
- fixRecipes: Fixed favorited recipes in the Craft and Build menus being reset after relogging.
- fixFurniture: Fixed disassembled furniture failing to disappear from the game world.
- fixContainers: Fixed non-lootable containers being placed in doorways.
- fixStairs: Fixed being unable to build stairs above ground due to non-existent squares.
- fixStairs: Fixed stair pillars not appearing for clients until the area was reloaded.
- fixStairs: Fixed odd cutaway visual behavior for player-built stairs and support pillars.
- buffFire-Hardened Spears: Fixed the inability to craft Fire-Hardened Spears.
- fixBasement: Fixed basement entrances disappearing after building and then removing a floor over the entrance.
💻Performance & Stability(6)
- fixAnimal: Fixed performance issues related to animal zones.
- fixPipe bomb: Fixed a server crash caused by the use of pipe bombs.
- fixPerformance: Fixed a memory leak associated with NetworkState packets.
- fixVehicles: Fixed a Null Pointer Exception (NPE) caused by calling getVehicleContainer() on a null square.
- fixBasement: Fixed a stream of errors when using 'Walk To' if the cursor is outside basement bounds.
- fixCommands: Fixed several errors associated with the AddXP and LoseXP commands.
🔊Visual & Audio(8)
- fixUI: Fixed the number of visible zombies counter.
- fixAudio: Fixed an SFX glitch occurring when attacked by a zombie while shooting.
- fixAnimation: Fixed the wrong animation playing when unequipping an item attached to the player's back.
- fixAudio: Fixed an audio glitch where double door sound effects would play incorrectly.
- fixAudio: Fixed updates breaking the ZombieState FMOD parameter setting.
- fixCar battery: Fixed a looping SFX glitch related to car batteries.
- fixAnimation: Fixed the door shaking animation.
- fixAudio: Fixed hitting sound effects not always playing during combat.
🖱️UI/UX(1)
- fixTooltip: Fixed seasoning ingredients not being displayed in item tooltips.
Summary
Multiplayer & Performance
This hotfix introduces several requested features for multiplayer, including functional drying racks and the ability to plaster walls. It also addresses critical stability issues, such as a server crash caused by pipe bombs and a memory leak related to NetworkState packets.
Gameplay & Survival
A significant fix has been applied to zombie migration, which was previously behaving erroneously. Survival mechanics see a major correction as body insulation and temperature will no longer default to zero, and the claustrophobic trait now correctly triggers panic. Additionally, several exploits involving item duplication and infinite bombs have been patched.
Animals & Building
Animal systems received performance and pathfinding optimizations for multiplayer. Building systems were also refined, fixing issues with stair construction, disappearing basement entrances, and the inability to craft Fire-Hardened Spears.