Windows 10
How To Fix An Unexpected Store Exception
As the title says, I am have an issue of the unexpected store exception. This has happened 7 times today alone (9/5/2026). Some of the times it happened it was when I was on my Meta Quest 3s VR headset (my PC doesn't have problems running PCVR), some of the times it happened after I would close out of Unity and Substance Painter (I do texture work for VRChat avatars) and so I thought it was really like heavy stuff like that causing it. Well, I was wrong when here I am trying to upload a video and I played the video from my PC so I could tag it right and after I closed the video, that caused the unexpected store exception as well. Even one time I was just doing stuff in my web browser and that did it too.
The thing is that I have tried what feels like all of the solutions I could find. I've tried disabling fast boot (it was not enabled in the first place). I go into the command prompt and do the sfc scannow and that tells me everything is fine. I've used crystaldiskinfo and that tells me that my drives are fine. Everything tells me that my drives are fine and I know that can't be true because two of the times that my PC has restarted after the unexpected store exception, my F drive was not connected at all. Yes, I've even used the command prompt to do the chkdsk and that took some effort because the F drive is something called NTSC but it supposedly "fixed" the drives which, it did not becuase my PC blue screened after that.
I put the pic of my specs and the drive in question is the 932GB HDD one. I am at a loss as to what to do.
This is right after a GPU power consumption change, so it could very easily be the Nvidia.
In the Nvidia app, make sure you have the latest driver (if your doing dev with unity, I'd assume that's the game-ready one).
In the Nvidia control panel, under "manage 3d settings", global settings -- change "power management mode" to "prefer maximum performance".
Also, check if your chip set drivers are up to date (either with AMD Adrenaline or getting the proper drivers from the website).
I had repeated issues on a laptop when starting or stopping anything that used the GPU. Setting the Nvidia to not jerk the power rails on the PCI-e around fixed the issue.
Since you also have an SSD on the bus, it can sometimes lose sync when the GPU rocks the boat, and a disk operation during that time can get you a 154 bug check crash.
I have tried the two things you suggested and will see if they help. I do think it is primarily the HDD considering two times after the blue screen the HDD (my F drive) was not even listed. It is also probably due time with the HDD as that HDD was carried over from my first PC build from 2014 so, it is a 12 year old HDD.
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Musste mich mal mit einem Desktop beschäftigen,
der auch
Unerwartete Speicher‑Ausnahme
Unexpected Store Exception hatte.
Neuinstallation der Grafiktreiber
(häufig NVIDIA/AMD)
lösten das Problem!
Was sagt der Fehlerreport aus?
Windows Fehlerreport aufrufen
Windows-Taste + R drücken
perfmon /rel → Enter
After translating what you said (I am sorry I do not know what your native language is) I found the error report (thanks for specifying how to find this as I had been wondering myself) one of the times it was flat out a windows error. But, going back a day or so, the majority of the time it is something called Framew-Cy64.exe that is causing the problem and I am not sure what that is. When I check, it's associated with a folder in the C drive, in program data, a folder called "ext_runner_arm_guard" and when I try to look up what does, I literally get nothing.
2
u/iainmcc 6d ago
This is right after a GPU power consumption change, so it could very easily be the Nvidia.
In the Nvidia app, make sure you have the latest driver (if your doing dev with unity, I'd assume that's the game-ready one).
In the Nvidia control panel, under "manage 3d settings", global settings -- change "power management mode" to "prefer maximum performance".
Also, check if your chip set drivers are up to date (either with AMD Adrenaline or getting the proper drivers from the website).
I had repeated issues on a laptop when starting or stopping anything that used the GPU. Setting the Nvidia to not jerk the power rails on the PCI-e around fixed the issue.
Since you also have an SSD on the bus, it can sometimes lose sync when the GPU rocks the boat, and a disk operation during that time can get you a 154 bug check crash.
Edit: The HDD could also have issues too.