Error Code 123:9d5d0e8f:b1dc02d

[crinrict]

Yes, you always need to keep your mods up-to-date.

There could be others that are causing similar issues though. So make sure ALL your mods are updated.

[Phantomlover1717]

If the game works without your CC and mods in, your issue is probably caused by a broken mod or CC.
You can find a full list of broken/incompatible CC and mods since the Seasons expansion pack over here:
https://forums.thesims.com/en_US/discussion/941998/broken-updated-mods-seasons-june-2018-patch

If it still doesn't work I suggest taking out half of your mods and CC and testing the game. Then keep splitting until you find all that is broken.
Either update or remove the broken CC/mods. 

[Ehkzer18]

I have the same problem except mine doesnt work even when I remove all my cc

[Phantomlover1717]

Could you try letting the game make a new game folder?
- Go to Documents\Electronic Arts\
- Rename the 'The Sims 4' folder to something like 'The Sims 4 old' 
- Start the game, this will create a new folder.
- Test the game, if it works fine start moving folders from 'The Sims 4 old' over to the new folder.

If this doesn't work, could you start your own post on this forum?

[Julerosay]

• Did you remove your mods too? For me I had to remove MCC.

[Sarbear_1794]

I’ve been trying to figure out for a week now why his error code has been popping up every time I try to play a household. After reading this I removed my mc command center out of my mods folder and downloaded the updated version of it, it works just fine now! 

[zo81i]

Well i don't know if this will work for you,but i just got a mod conflict detector and got rid of the mods that caused conflicts with the game and it worked just fine the link is down below

Mod Conflict detector at MTS

<EDIT (crin): removed link. Please be aware that links to 3rd party downloads are not allowed at AHQ. Please only name them>

[yooemilyy]

I have the same issue, not long ago I was really excited to play my game with my new cc and when I press to play the game (lot) it gives me the same error code my completely kicking me out. I don't want to redownload my mods and cc because its a lot. I have reopened the game and checked the files and nothing.

[yooemilyy]

i will also like to add that i have deleted my mc command mod 

[crinrict]

A lot of mods/custom content give issues the game as they are no longer compatible with the newest patch.

Objects with a lot of slots no longer work and need to be removed

Here's a list that can help you narrow down the culprit: https://forums.thesims.com/en_US/discussion/968717/broken-updated-mods-cc-university-edition

If it still happens, use the 50/50 method: http://modthesims.info/wiki.php?title=Game_Help:Finding_Problem_Custom_Content

If you have exactly that number, it might be Meaningful Stories. Make sure to update that.