SteamVR has encountered a critical error...

[Danny_G13]

Getting this one a lot. Random...

Just happens.

No overclocking, and hey presto a game will just start wobbling and things go black.

3090, and this has been kind of happening irregularly for over a month.

Kind of ruining VR because now every time I play I expect a crash.

And yes, I've tried uninstalling and reinstalling SteamVR.

Any ideas?

[Danny_G13]

Some more info, it's ALWAYS the same error:

BEX64, code 0xc0000409 and:

"The system detected an overrun of a stack-based buffer in this application. This overrun could potentially allow a malicious user to gain control of this application."

This has been going on for a long time....

[Danny_G13]

Faulty module is ucrtbase.dll.

That's all I got.

[Yuko]

That is more likely a driver issue for the gpu than something wrong with SteamVR itself. Have you tried do a clean reinstall of the drivers for the gpu?

[Bob Loblaw]

Seems that's a general overflow error and ucrtbase.dll is the reporting module, not the root cause.
refs:
https://stackoverflow.com/questions/46779455/windows-c-service-faulting-on-ucrtbase-dll-when-starting
https://superuser.com/questions/1397010/application-crash-due-to-ucrtbase-dll
https://answers.microsoft.com/en-us/windows/forum/windows_10-files-winpc/ucrtbasedll-is-causing-my-accounting-program-to/5d667444-9071-4714-a5df-3b926cd2201f?page=2

Looks like one guy's printer driver was causing his accounting software to give the same error.

A bad or inadequate PSU caused the same error for this guy:
https://www.nvidia.com/en-us/geforce/forums/geforce-graphics-cards/5/332632/consistent-os-crashing-under-graphics-load/

So if Yuko's suggestion doesn't work, check your PSU health. You might also try a slight underclock to get relief.

[Danny_G13]

Thanks for the replies - it's 99% certainly the drivers. I've just looked in appcrashview and all the historic causes started literally the day I installed the 465.89s.

I'll get rid and install either the previous or more recent sets.

Thank you both very much - I'll report back in due course hopefully with good news!

[Zerborstian]

So?

[Danny_G13]

Publicado originalmente por Zerborstian:

So?

This had been going on for a month, and while there's been no issues since I installed the new driver set YET I don't want to jinx it. Was going to wait for a while before updating.

[sebastien.chedalbornu]

sorry but i do not agree with everything marke above. i got these errors all the time with DCS, playing and then a blank and on the monitor this message indicating steam vr encounter a critical error and i can restart steam vr or quit stem vr.
meanwhile DCS is still running, i can see it on the mirror view.

what i found so far is taht it seems that id i disable reprojection then i do not have the crash.
I also noticed that almost all my VRAM is used 9580MB out of 10GB... but as the steam VR is stealing 3GB of vram i'm not surprised uinfortunately.

[sebastien.chedalbornu]

Publicado originalmente por Danny_G13:

Publicado originalmente por Zerborstian:

So?

This had been going on for a month, and while there's been no issues since I installed the new driver set YET I don't want to jinx it. Was going to wait for a while before updating.

and so which driver are you using ? i do have the problem with steamvr non beta v1.16.10 and gforce drivers 461.72

[Danny_G13]

466.11 at present, and had no issues since I removed that driver set. Was definitely the problem.