Photoshop Crashes / Does not open (Noticed at v27.7, 27.8) after/While "Measuring Memory"

With a little help from claude:


 

What's actually happening — the technical chain

The faulting module is the key clue:

OpenCLOn12.dll from Microsoft.D3DMappingLayers_1.2606.3.0
Exception code: 0xc0000409

This is not a standard Intel OpenCL driver. It's Microsoft's OpenCL-on-DirectX12 translation layer — a compatibility shim that emulates OpenCL calls by mapping them onto D3D12 underneath. Intel Arc GPUs (including your B390) ship with no native OpenCL runtime of their own — they rely entirely on this Microsoft layer. NVIDIA and AMD both have their own OpenCL implementations, so this issue is Arc-specific.

Why P3 specifically triggers the crash

Here's the chain of events during Photoshop startup:

1. Photoshop reads the active Windows display ICC profile very early in startup — before GPU acceleration is even fully initialized. This happens during the "Measuring Memory" splash phase.
2. A Display P3 profile signals to Photoshop that it's on a wide-gamut, likely 10-bit display. Photoshop then tries to set up a GPU-accelerated color pipeline that matches — initializing an OpenCL context with surface/texture formats appropriate for wide-gamut rendering.
3. That wide-gamut OpenCL surface format request goes through OpenCLOn12.dll, which then has to translate it into D3D12 resource descriptors. This is where it breaks — the D3D Mapping Layer either doesn't support the requested format or has a bug in the negotiation code path for wide-gamut 10-bit surfaces.
4. Exception 0xc0000409 is a STATUS_STACK_BUFFER_OVERRUN — Windows' own security check fires when a stack buffer overflows during execution. This almost always happens in format negotiation or buffer sizing code, where an unexpected input (the P3 profile metadata) causes a miscalculated allocation.
5. With sRGB or AdobeRGB, Photoshop takes a completely different, well-tested code path — standard 8-bit surface formats that OpenCLOn12.dll handles without issue.

Figured out a FIX

Display profile was set to P3 ( had changed to test something and had left it there)

Works after setting it back to AdobeRGB / sRGB  and restarting the system

For my desktop Monthly monitor calibration had created a new profile

I won’t pretend to understand a crash report, but it says the faulting module is OpenCL. So you can try to disable OpenCL in Preferences > Performance > Graphics Processor > Advanced.

OpenCL is in any case being phased out and I don’t think it’s used much in Photoshop now.