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Game crashing after Windows 11 24H2 Update

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Lord Potence

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Nov 11, 2024
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Hi everyone, since updating to Windows 11 24H2, I’ve encountered problems with Crusader Kings 3. The game either crashes during gameplay or won’t boot up at all. When it freezes, I can’t use Alt+Tab or Ctrl+Alt+Del to close it, and I have to shut down the PC directly from the power supply. Below are my system specs and the troubleshooting steps I’ve tried so far:

Edit: There is an open Bug Report being currently reviewd here https://forum.paradoxplaza.com/forum/threads/game-crashing-after-windows-11-24h2-update.1718749/
 

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I don't see any issues in those files.

If that Windows update does cause this problem with this (or any) game, we're probably not going to be able to fix it here! On one hand, I've sene no otgher such reports, on the other hand someone has to be first!

Can you undo that update, to 100% confirm it is the problem?
 
Hello again Andrew, I'll try to rollback to 23H2, it will probably take me a while since I've lost the 10 day window that Microsoft gives you to rollback, so I'll have to find an image with the older version. This issue doesn't replicate in other games but now I know that CK3 files are ok and everything should work. I'll let you know as soon as I find out more, thanks once more man!!
 
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Hello, came across this thread as I'm having the same issue as you have described, it's driving me insane.

In perhaps 3 out of every 5 launches, the game will hang on the "initializing game" screen, and the entire system becomes unresponsive. The game doesn't write anything into dumps/crashes directories and all of its logging looks good (it just stops logging when the system hangs). Windows event logging doesn't log anything anomalous. Sometimes I still hear audio playing but there's a lot of corruption. I can also sometimes move the cursor at a very impaired rate. I also have to reset the system with the reset switch.

Interestingly the crash only occurs if the renderer is DX11 - switching to Vulkan everything is fine. Performance with Vulkan renderer is significantly worse and I think I can recall reading some comments in these forums that it is really not intended to be used as the renderer on Windows systems.

I run an AM5 system with X670E Board / Ryzen 9 7900x / NVIDIA 4080. My 24H2 install wasn't an in-place upgrade, but a fresh install. NVIDIA driver on latest. No GFE. No overlays. All VcRedists latest. DirectX runtimes latest. Extremely lean system, no third party security products, no non-Microsoft kernel drivers (ie. anti-cheats), haven't even got Office installed. I play other Clausewitz engine games (Stellaris, HOI4, EU4) and have had zero issues with those. System is otherwise very stable and will sustain any of the typical stress tests for >10 mins with no issues.

I've performed heaps of troubleshooting trying to narrow down a possible cause.

Some things I've tried, changing only one variable at a time:

- Disabled Steam cloud saves (always have been)
- Delete all files, trigger Steam to redownload
- Unsubscribe all mods, remove workshop cache etc.
- Delete games shadercache directory
- Delete all savegames
- Delete entire game data directory in userprofile
- Added Defender exceptions for game files, game data etc.
- Moved game to a different disk (with and without BitLocker enabled) (Disks are all NVME with a lot of IOPS and massive data rates)
- Disabled DDR5 Context Restore and retrained at boot.
- Disabled virtualisation in firmware (so all VBS features in Windows are disabled)
- Disabled EXPO memory overclock and ran at SPD rates
- Ran CPU with only single core complex instead of both
- Disabled SMT
- Switched system RAM entirely to some spares I have with lower clocks
- Probably more things I have forgotten

My instinct, with no real evidence to back it up, is that the issue is probably with an interaction between Windows and the NVIDIA driver.

I'm about to clean install 23H2, and will report back if the issue persists after that.
 
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Terry Solid said:
I've clean installed 23H2 and am now unable to reproduce the issue after ~20 launches of the game.
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Hey man, I talked with others who are having the same problem as we are. One of them actually rolled back to Windows 10 and can play fine. Honestly, I rulled out an OS related issue, since the crashes appear to be all across the board as I talked with others who experienced the same and were on 23H2, 24H2 and even on MAC. But what you told me has made me suspicious again. I can't roll back to 23H2 since the two weeks that Windows give you to do it have passed for me. I would appreciate if you could tell how you rolled back and maybe I'll try the same.
 
Lord Potence said:
Hey man, I talked with others who are having the same problem as we are. One of them actually rolled back to Windows 10 and can play fine. Honestly, I rulled out an OS related issue, since the crashes appear to be all across the board as I talked with others who experienced the same and were on 23H2, 24H2 and even on MAC. But what you told me has made me suspicious again. I can't roll back to 23H2 since the two weeks that Windows give you to do it have passed for me. I would appreciate if you could tell how you rolled back and maybe I'll try the same.
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I didn't roll back, I just did a clean install of 23H2. Windows deployment is something I do a lot in my day job, so this isn't a daunting task for me.

Doing a clean install means wiping all the data on your OS disk, and starting over, so it can be quite a hassle depending on your circumstances.

Having said that, I'm happy to give some guidance if you want to take that drastic step.
 
Terry Solid said:
I didn't roll back, I just did a clean install of 23H2. Windows deployment is something I do a lot in my day job, so this isn't a daunting task for me.

Doing a clean install means wiping all the data on your OS disk, and starting over, so it can be quite a hassle depending on your circumstances.

Having said that, I'm happy to give some guidance if you want to take that drastic step.
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Hi! One of the steps I've tried was a clean install of Windows 11 using the tools Microsoft provides, so I already have a backup of the files I need to keep. My problem is finding a way to clean install something that is not 24H2, because in Microsoft oficial sites I only found myself able to download the latest versions. If you have a way to get that 23H2 so I can perform a clean install I'll probably give it a go. Thanks!!
 
I've just had another report of this. Whether it's thought to be a Windows or game problem I'm not sure, but it would be great if you would make a new thread in Bug Reports on this for QA to look into. Thanks!
 
AndrewT said:
I've just had another report of this. Whether it's thought to be a Windows or game problem I'm not sure, but it would be great if you would make a new thread in Bug Reports on this for QA to look into. Thanks!
Click to expand...

Looks like OP made a thread, the forum doesn't let me post the full URL here. Partial URL as follows:

.../threads/game-crashing-after-windows-11-24h2-update.1718749/
 
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Hello, i fixed mine by moving (copying) the game folder into an separate SSD or HDD and now it runs fine, it seems that there is something in the program files or where the windows is installed causing the freezing issue.
 
AndrewT said:
I've just had another report of this. Whether it's thought to be a Windows or game problem I'm not sure, but it would be great if you would make a new thread in Bug Reports on this for QA to look into. Thanks!
Click to expand...
As the system freezes I'm unsure there is a dump file \ crash log created, is there a way we could provide info that may help?
 
Maverick-IL said:
As the system freezes I'm unsure there is a dump file \ crash log created, is there a way we could provide info that may help?
Click to expand...
Not really, a frozen PC cannot write any log or dump files. Hopefully QA can repro the issue themselves.
 
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