Frequent BSOD (IRQL_NOT_LESS_OR_EQUAL) after update to Kaspersky Plus 21.22.7.466(a)

[ScepticalSara]

Hello Kaspersky Support Team,

I am writing to report a serious issue with frequent Blue Screens of Death (BSOD) that started occurring immediately after a recent update to my Kaspersky Plus software. I suspect there may be a compatibility issue with the latest version.

Problem Description:

The BSOD error is consistently IRQL_NOT_LESS_OR_EQUAL (a). This issue began on or around September 2nd, 2025, which coincides with when my Kaspersky Plus updated to version 21.22.7.466(a).

The crashes primarily happen when I am running specific games. The issue is most severe and easily reproducible with the game Delta Force, but it also occurs with Honkai Impact 3 (BH3.exe).

System & Software Information:

• Kaspersky Version: Kaspersky Plus 21.22.7.466(a)

• Operating System: Windows 11 Pro for Workstations

• OS Version: 25H2

• OS Build: 26220.5770

• Experience Pack: Windows Feature Experience Pack 1000.26100.240.0

• Graphics Driver: NVIDIA Studio Driver 580.97

Technical Details from BSOD Dump Analysis:

I have analyzed a memory dump file, and the findings point towards a potential driver conflict leading to stack corruption. The key points are:

• The crash occurs within the NT Kernel (ntkrnlmp.exe).

• The faulting function is nt!RtlpUnwindPrologue, which fails during a stack walk operation.

• The call stack indicates this stack walk was initiated by Event Tracing for Windows (ETW), likely for logging purposes.

This pattern often suggests that a filter driver (such as those used by antivirus software) may have caused an unstable state, leading to a crash when the system tries to read the stack.

Could you please investigate if there is a known issue with version 21.22.7.466(a) regarding game compatibility or conflicts with specific system components? Are there any suggested workarounds or diagnostic steps I should take? Minidumps are available and glad to share.

Thank you for your time and assistance.

[harlan4096]

https://support.kaspersky.com/common/diagnostics/15612

[ScepticalSara]

17 minutes ago, harlan4096 said:

https://support.kaspersky.com/common/diagnostics/15612

Thank you for your shared SOP. I'll contact support team for further assistance.

[ScepticalSara]

11 hours ago, harlan4096 said:

https://support.kaspersky.com/common/diagnostics/15612

Maybe due to dev version Windows installation, i'm having issue enabling full memory dump. After I applied changes and restart, it switched back to minimal memory dump(256KB). Maybe I should contact Microsoft for help. 

[harlan4096]

[ScepticalSara]

Yes I've changed setting here and I have manually checked the registry key HKLM\SYSTEM\CurrentControlSet\Control\CrashControl. The CrashDumpEnabled DWORD value correctly changes to 1 after I apply the setting. But setting value here have switched back.  

[ScepticalSara]

13 minutes ago, harlan4096 said:

I've post this issue in Windows Community. Hope for further cantact.

Thank you for your help. 

[harlan4096]

Did You reboot the system after the change?

[ScepticalSara]

3 minutes ago, harlan4096 said:

Did You reboot the system after the change?

Must be yes(

[Lukemuke79]

Any reason you install Windows 11 ver 25H2, because AFAIK it still in beta ver. Can you install the latest stable Windows 11 (24H2)?

If not possible try disable Kaspersky Virtualization