❗ Monster Hunter Wilds Crashing on Ryzen 5 1600 (Zen 1) — Exception C0000096 — Likely Unsupported Instruction

[unsword]

Hey all — I’m dealing with consistent game crashes that appear to be related to CPU instruction compatibility, and I wanted to both raise awareness and report this in detail.

System Specs:

CPU: AMD Ryzen 5 1600 (Zen 1)
GPU: NVIDIA RTX 4070 (Driver: 528.83 – March 2025, WHQL)
RAM: 32GB DDR4
Storage: Fast SSD
OS: Windows 10 Pro 64-bit
Display: Ultrawide (3440x1440)

Crash Behavior:

The game consistently crashes to desktop with no error message. Sometimes it takes 30–40 minutes, sometimes just 2. Once REFramework was removed, I started seeing the proper Capcom crash reporter, and the crash log always shows:

ExceptionCode : C0000096
ExceptionAddress: 0x14BEECDB2
Faulting Module : MonsterHunterWilds.exe
That code (C0000096) points to a privileged or unsupported instruction being called. From what I’ve gathered, this could be a result of the game trying to execute instructions that are only available on newer CPUs (like AVX2 or FMA3), which Zen 1 doesn’t support.

What I’ve Already Tried (in full):

Software & Mod Fixes:
Fully clean uninstalled the game

Manually deleted leftover folders from:
SteamApps/common
%AppData%
Documents\My Games\

No REFramework or mods reinstalled
Removed all autorun/ scripts, .ini configs, and Lua files
Verified files multiple times
Ran the game with -dx11 launch flag
Tried both fullscreen and borderless windowed
Tested with both ultrawide and 16:9 resolutions
Disabled all overlays (Steam, NVIDIA, Discord)
Set graphics to Low/Medium
Let game idle and also ran live hunts to trigger crash conditions
Hardware & System Settings:
Updated GPU drivers (WHQL)
Monitored system (CPU, GPU, RAM, VRAM) — no overheating, no spikes
Tried on High Performance power plan
Disabled background apps and cleaned startup

Conclusion:

Based on all this testing, the game appears to execute CPU instructions not supported by Ryzen 1000-series (Zen 1). This wasn't always an issue — crashes likely began after a recent patch that introduced new code paths. If the game isn't doing proper CPU feature checks before calling these instructions, users on Zen 1 chips (still common!) will continue to crash hard with Exception C0000096.

Request to Capcom:

Please consider implementing a CPU feature check or fallback for users on Zen 1 or similar older CPUs. At the very least, updating the system requirements to reflect AVX2 or similar needs would help players avoid this frustrating issue.

Happy to provide full logs, crash dumps, or testing help if needed.

[Rod]

Originally posted by Kiririn:

It's possible. Capcom does not support that CPU.

I just don't think it has to do with anything related to AVX2.

Originally posted by Rod:

Pretty sure it has to do with the 1st Gen CPU

CPU: AMD Ryzen 7 1700 (Zen 1)
GPU: NVIDIA GTX 1080
RAM: 48GB DDR4
Storage: NVME
OS: Windows 10 Pro 64-bit

If you see my earlier post, i posted a way to consistently crash. I saw a guy who also claimed to be crashing in tent had also the same first Gen cpu. I decided to try it out myself and sure enough, it happens to me too. Idk if that helps with the theory.

[Kiririn]

That could be any number of things. First Gen Ryzen is not supported by Capcom. We don't know the reason.

The reports from people who actually have CPUs that do not support AVX2 report the game either failing to launch or crashing on startup.

Unless I misunderstood you, what you found was that you were able to repeat the crash but not the solution.

Originally posted by Rod:

Originally posted by Kiririn:

It's possible. Capcom does not support that CPU.

I just don't think it has to do with anything related to AVX2.

If you see my earlier post, i posted a way to consistently crash. I saw a guy who also claimed to be crashing in tent had also the same first Gen cpu. I decided to try it out myself and sure enough, it happens to me too. Idk if that helps with the theory.

[Rod]

Originally posted by Kiririn:

That could be any number of things. First Gen Ryzen is not supported by Capcom. We don't know the reason.

The reports from people who actually have CPUs that do not support AVX2 report the game either failing to launch or crashing on startup.

Unless I misunderstood you, what you found was that you were able to repeat the crash but not the solution.

Originally posted by Rod:

If you see my earlier post, i posted a way to consistently crash. I saw a guy who also claimed to be crashing in tent had also the same first Gen cpu. I decided to try it out myself and sure enough, it happens to me too. Idk if that helps with the theory.

Correct, I'm just stating a way to consistently crash, not a solution.
And do those ppl report the same error code?

[ThorF]

zen 1 is not in the minimal spec in the game page on steam why would they care for a thing that they don't support anyway ? you will just have to MacGyver it until the end of time or change CPU

[Kiririn]

I don't believe I saw reports of an error code, but that doesn't mean the game won't throw one.

They reported the game just fails to launch. They never even get into the game is my point.

Originally posted by Rod:

Originally posted by Kiririn:

That could be any number of things. First Gen Ryzen is not supported by Capcom. We don't know the reason.

The reports from people who actually have CPUs that do not support AVX2 report the game either failing to launch or crashing on startup.

Unless I misunderstood you, what you found was that you were able to repeat the crash but not the solution.

Correct, I'm just stating a way to consistently crash, not a solution.
And do those ppl report the same error code?

[NeoX]

Originally posted by Kiririn:

I don't believe I saw reports of an error code, but that doesn't mean the game won't throw one.

They reported the game just fails to launch. They never even get into the game is my point.

Originally posted by Rod:

Correct, I'm just stating a way to consistently crash, not a solution.
And do those ppl report the same error code?

Originally posted by Rod:

Originally posted by Kiririn:

That could be any number of things. First Gen Ryzen is not supported by Capcom. We don't know the reason.

The reports from people who actually have CPUs that do not support AVX2 report the game either failing to launch or crashing on startup.

Unless I misunderstood you, what you found was that you were able to repeat the crash but not the solution.

Correct, I'm just stating a way to consistently crash, not a solution.
And do those ppl report the same error code?

Its a different crash (exit code) in the system event.

Originally posted by ThorF:

zen 1 is not in the minimal spec in the game page on steam why would they care for a thing that they don't support anyway ? you will just have to MacGyver it until the end of time or change CPU

^ this

[Gene Cousineau]

Tremendous bottleneck thanks to your potato of a PC.

[Kiririn]

Originally posted by NeoX:

Originally posted by ThorF:

zen 1 is not in the minimal spec in the game page on steam why would they care for a thing that they don't support anyway ? you will just have to MacGyver it until the end of time or change CPU

^ this

Because believe it or not there exist people with PCs that are below the minimum requirements that wouldn't mind trying to run the game.

Triple monitor ultra wide is not supported by Capcom but that didn't stop you from using mods to get it to work. I'm surprised you don't see the parallel.

[ThorF]

Originally posted by Kiririn:

Originally posted by NeoX:

^ this

Because believe it or not there exist people with PCs that are below the minimum requirements that wouldn't mind trying to run the game.

Triple monitor ultra wide is not supported by Capcom but that didn't stop you from using mods to get it to work. I'm surprised you don't see the parallel.

1 is comfort with 3 monitor
and the other is just to make your game run i would choose to upgrade my 8 years old CPU before having 3 monitor
and the only parallel i see is mods so yes use mods and don't report it to the dev that don't support your CPU

[Kiririn]

One person is trying to do something that is not officially supported and the other person is trying to do something that is not officially supported.

Originally posted by ThorF:

Originally posted by Kiririn:

Because believe it or not there exist people with PCs that are below the minimum requirements that wouldn't mind trying to run the game.

Triple monitor ultra wide is not supported by Capcom but that didn't stop you from using mods to get it to work. I'm surprised you don't see the parallel.

1 is comfort with 3 monitor
and the other is just to make your game run i would choose to upgrade my 8 years old CPU before having 3 monitor
and the only parallel i see is mods so yes use mods and don't report it to the dev that don't support your CPU

[ThorF]

Originally posted by Kiririn:

One person is trying to do something that is not officially supported and the other person is trying to do something that is not officially supported.

yes but for two different reason and if you can't see that you are just making a statment over the overall view of it. some hacker go hack a bank to rob money and some hacker hack a bank to demonstrate a vulerability and tell the bank about it.
both are hacking but for different reason... anyway officially unsupported i guess

[Kiririn]

Obviously the reasons are different but that wasn't what I referred to as the parallel.

Hackers and banks and vulnerabilities? That is a terrible analogy.

In the case of the two examples I gave both people would be trying to run the game in a way that is unsupported by the developer. I also wasn't even responding to you. That was a response to NeoX who runs, or at least ran at some point, the game on triple monitors.

Originally posted by ThorF:

Originally posted by Kiririn:

One person is trying to do something that is not officially supported and the other person is trying to do something that is not officially supported.

yes but for two different reason and if you can't see that you are just making a statment over the overall view of it. some hacker go hack a bank to rob money and some hacker hack a bank to demonstrate a vulerability and tell the bank about it.
both are hacking but for different reason... anyway officially unsupported i guess

[ThorF]

Originally posted by Kiririn:

Obviously the reasons are different but that wasn't what I referred to as the parallel.

Hackers and banks and vulnerabilities? That is a terrible analogy.

In the case of the two examples I gave both people would be trying to run the game in a way that is unsupported by the developer. I also wasn't even responding to you. That was a response to NeoX who runs, or at least ran at some point, the game on triple monitors.

Originally posted by ThorF:

yes but for two different reason and if you can't see that you are just making a statment over the overall view of it. some hacker go hack a bank to rob money and some hacker hack a bank to demonstrate a vulerability and tell the bank about it.
both are hacking but for different reason... anyway officially unsupported i guess

I also wasn't even responding to you... then doing so sure go on make all your statement why i'm wrong big bran man

[dice-k]

My CPU is a ryzen7 1700, and the patch "Ver.1.010.01.00" provided today has prevented the crash.
It may happen again someday though...

[2'STYLISH]

CPU Might be the problem and you really have huge bottleneck how do I know? Cuz I had that CPU like from 7 years ago yep that is really a old CPU.

My advice for you since you have a 4070 assuming you have a decent PSU best bet is to upgrade your processor to 5800x3d(or 5600 if you don't have the budget). That's the only solution on my mind.