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(