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Syncing NPCBehaviors
After the update the save my group has will not let anyone except for the host join. Gets stuck at syncing NPCBehaviors. Not sure if this is a common issue, but wanted to bring attention!
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Interesting, I'm having the same issue but I am "in" the game, I just can't see it. My friend can see me and I can technically move and interact with things, I just can't see it on my screen.
im also having this issue i was really hoping the latest update would fix the connectivity issues
Originally posted by chronobeans:
any answers ?
Nevermind, fixed after host saved slept reloaded
Originally posted by Midara:
Interesting, I'm having the same issue but I am "in" the game, I just can't see it. My friend can see me and I can technically move and interact with things, I just can't see it on my screen.
This is exactly what is happening to me and my friend. The first time it happened, my friend (AB) was hosting, and I got the Syncing message. We transfered the world over to my PC, and AB joined without problem. Then I had to restart the game; and when I opened the world, he joined and got Syncing NPCBehaviors. We tried what we did earlier where AB was hosting, and I got the message again. In game, able to move and interact, but visually stuck in a loading limbo. I couldnt leave the world through the Esc menu and had to AltF4.

We tried for 2 hours to fix it, hopping between hosting PCs, and still the same problem.
We are playing modded and thought that was the problem, but the wierd part is that it worked well and without bugs and/or problems. After the restart it went straight to hell.
Same issue with my and my friends. Unable to play on an recent save and even a new game.
Same issue here we either get stuck on NPC Behaviors or we get stuck on NPC Inventory Sync. We loaded the game up once after the updated played for hours and then got off to add in another friend. After that wouldnt work no matter what we tried.
I am having the same issue, we were able to play after the update no problem but last night couldn't get past the Syncing NPC Behavior screen
We have the same problem with my friends do you know when this will be patched ? That’s pretty annoying
So my friends and I had this problem earlier today and we tried several thing before finding a fix:

- host save/reload
- host going through a day then sleeping
- trying cleartrash command and doing the above as well

The fix that worked for us was having the host remove everything from ALL drying racks (which incidentally we had only just started using today, so that was obviously connected to the issue) and then we could all join again no problems.

Hope this helps you guys.
we have the same problem today. Yesterday we can play normaly today Sync NPC Behaivior bug.

we had tried:
- Delete Trash, NPC, WorldstorageEntynity.json data
- all racks are cleard
- save reload
- sleeping
nothing worked for us.
So, whoever has the same problem, I did some digging, asking and testing.
Multiplayer is buggy ATM, what you can try to do is:
- type "cleartrash" in console
- clear off any drying racks, mixing tables
- wait for it to turn 4AM, and take out all the money from lockers/beds so NPCs dont start work next morning (THIS WORKED BEST)
- Host load the world, sleep to the next day and save; then invite your friends to a lobby and join the world at the same time.
Also if your workers have anything in their inventory its best to take it out, so you dont get the next bug of "Syncing NPCInventory" (happened to me)

Hope this helps!!
Originally posted by Kamiry:
we have the same problem today. Yesterday we can play normaly today Sync NPC Behaivior bug.

we had tried:
- Delete Trash, NPC, WorldstorageEntynity.json data
- all racks are cleard
- save reload
- sleeping
nothing worked for us.
I personally wouldnt recommend messing around with internal files, unless you ABSOLUTELY know what you are doing. I did that and had to verify files and it was a hassle.

Also if you play modded, there are some mods like "BetterEmployes" that mess around with their pathing and internal code, so try disabling it and if all works well; then you can try it with it enabled. If there is a problem with the mod, contact the dev or join the Modding discord and they will help.
Myself and a friend recently had this issue, it was caused by them having the 1 mill net worth achievement not generating till they slept to save and started a new day and after the achievement loaded with the world saved via sleeping the next invite worked.

Sleeping seems to progress achievements which may also be related
I just had the same problem. I tried verifying integrity of game files and that fixed mine.
Started a new world just to have it happen again. :steamthumbsdown:
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Date Posted: Nov 3, 2025 @ 5:04pm
Posts: 47