Access violation when call SetPixelFormat

[Yuya_Fukazawa_bn7]

static void InitPixelFormat(HDC hDC)
{
	PIXELFORMATDESCRIPTOR pixelFormatDescriptor{};
	pixelFormatDescriptor.nSize      = sizeof(PIXELFORMATDESCRIPTOR);
	pixelFormatDescriptor.nVersion   = 1;
	pixelFormatDescriptor.dwFlags    = PFD_DRAW_TO_WINDOW | PFD_SUPPORT_OPENGL | PFD_DOUBLEBUFFER;
	pixelFormatDescriptor.iPixelType = PFD_TYPE_RGBA;
	pixelFormatDescriptor.cColorBits = 24;
	pixelFormatDescriptor.iLayerType = PFD_MAIN_PLANE;

	int pixelFormat = ::ChoosePixelFormat(hDC, &pixelFormatDescriptor);
	ThrowIfFailed(pixelFormat != 0);

	BOOL result = ::SetPixelFormat(hDC, pixelFormat, &pixelFormatDescriptor);
	ThrowIfFailed(result != FALSE);
}

static void CreateWindowAndSetPixelFormat()
{
	HWND hWindow = MyCreateWindow(1, 1);

	HDC hDC = ::GetDC(hWindow);
	ThrowIfFailed(hDC != NULL);

	InitPixelFormat(hDC);

	::ReleaseDC    (hWindow, hDC);
	::DestroyWindow(hWindow);
}

int main(void)
{
	std::thread thread(CreateWindowAndSetPixelFormat);
	thread.join();

	CreateWindowAndSetPixelFormat();    // 0xC0000005 (Access violation) in igxelpicd64.dll when call SetPixelFormat

	return 0;
}

When call SetPixelFormat after the thread that called SetPixelFormat has terminated,
an exception (0xC0000005, Access violation) occurs in igxelpicd64.dll.

Isn't this a driver bug?

I have attached some files.

• SSUScanInfo.txt .. Intel System Support Utility output.
• SetPixelFormatTest .. Visual Studio Solution (Reproduction environment)

[Bailio_Intel]

Hello 祐哉 深澤,

Greetings from Intel Customer Support.

Thank you for providing the detailed bug report, reproduction steps, and attached files. We appreciate the effort you have taken to investigate and document the issue.

To further analyze the reported 0xC0000005 Access Violation exception in igxelpicd64.dll when calling SetPixelFormat, we would appreciate the following additional information:

• Issue Reproduction Details Does the issue occur consistently every time the provided sample application is executed?
• Does the issue occur only when using multiple threads, or can it also be reproduced in a single-threaded application?
• Does the issue occur with a clean project created from scratch, or only with the provided reproduction sample?
• Are there any specific OpenGL versions or configurations required to reproduce the issue?
• Does the issue occur with the latest Intel graphics driver available?
• Have you tested with a previous driver version, and if so, does the behavior change?
• Does the issue occur on other systems with the same Intel graphics hardware?

Once we receive the requested details, we will continue investigating the behavior and determine the next steps.

Thank you for your cooperation and support. We look forward to your response.

Best regards,

Jennifer B.

Intel Customer Support

[Yuya_Fukazawa_bn7]

• Issue Reproduction Details Does the issue occur consistently every time the provided sample application is executed?
  Yes.
• Does the issue occur only when using multiple threads, or can it also be reproduced in a single-threaded application?
  Only when using multiple threads.
• Does the issue occur with a clean project created from scratch, or only with the provided reproduction sample?
  The issue occur with a clean project created from scratch.
  (The issue originally occurred in a different application. I created the provided reproduction sample from scratch.)
• Are there any specific OpenGL versions or configurations required to reproduce the issue?
  No.
  In the provided reproduction sample, an OpenGL context has not been created.
• Does the issue occur with the latest Intel graphics driver available?
  Yes. (Driver version "32.0.101.7088" is latest)
• Have you tested with a previous driver version, and if so, does the behavior change?
  I have observed crashes caused by call SetPixelFormat in driver version 32.0.101.6297 and later.
  But I don't know the issue occur with the provided reproduction sample using old version driver.
• Does the issue occur on other systems with the same Intel graphics hardware?
  I don't know.
  However, the issue does not occur on another PC（VEN_8086&DEV_A7A0, Driver version "31.0.101.5333"）

[Bailio_Intel]

Hello 祐哉 深澤,

Thank you for response, and we will now coordinate this with the team. Please wait for our update.

Best regards,

Jennifer B.

Intel Customer Support

[BuenoS_Intel]

Hi Yuya_Fukazawa_bn7,

Thank you for your continued cooperation while I work to investigate this issue.

Before we proceed further, I would like to set your expectations regarding software support for your Intel Processor Graphics.

As of September 19, 2025, Intel moved 11th through 14th Generation Intel® Processor Graphics, along with related Intel Atom®, Pentium®, and Celeron® processor graphics, to a legacy software support model. Under this model, Intel will provide software support for affected products primarily for critical fixes and security vulnerabilities.

Going forward, software updates for these products will move to a quarterly release cadence, with additional critical releases provided as needed. Only critical fixes and security vulnerabilities will be addressed in quarterly driver releases.

With this in mind, please let me know if you would still like to continue troubleshooting the issue. If so, I would like to gather some additional information to help us isolate the cause:

1. Have you tested any older graphics driver versions on the same system?
2. If so, did you perform a driver rollback, and did the issue change afterward?
3. On this same system, which driver version(s) have worked properly without experiencing the issue?
4. Have you performed a clean installation of the graphics driver using Display Driver Uninstaller (DDU)?

Your answers to these questions will help us determine whether the issue is specific to a particular driver version or if further troubleshooting is warranted.

Thank you, and I look forward to your response.

Best regards,

Bueno S.

Intel Customer Support Technician

[Bailio_Intel]

Hi Yuya_Fukazawa_bn7,

I’m following up on my previous email regarding the graphics issue and the additional information requested.

As mentioned, Intel has moved 11th through 14th Generation Intel® Processor Graphics, along with related Intel Atom®, Pentium®, and Celeron® processor graphics, to a legacy software support model. As a result, driver updates for these products will primarily focus on critical fixes and security vulnerabilities and will follow a quarterly release cadence.

To help us determine the next steps, could you please provide an update on the following?

1. Have you tested any older graphics driver versions on the same system?
2. If so, did you perform a driver rollback, and did the issue change afterward?
3. Which driver version(s) have worked properly on this system without experiencing the issue?
4. Have you performed a clean installation of the graphics driver using Display Driver Uninstaller (DDU)?

Please let me know when you have a chance. This information will help us further isolate the cause and determine whether additional troubleshooting would be worthwhile.

Thank you, and I look forward to your response.

Best regards,

Jennifer B.

Intel Customer Support Technician