Here’s a concise summary based on the article from support.microsoft.com regarding the blue screen exception after a Windows update:
Issue:
After installing the specified Windows update and restarting, devices may encounter a blue screen exception with error code 0x18B (SECURE_KERNEL_ERROR).
Automatic Mitigation:
- Microsoft is using Known Issue Rollback (KIR) to mitigate this issue.
- KIR will automatically resolve the problem on most consumer and non-managed business devices within 24 hours.
- Restarting your Windows device may help the fix apply faster.
- IT admins can resolve the issue by installing and configuring a special Group Policy.
- The Group Policy is available at:
- Computer Configuration > Administrative Templates > <Group Policy name>
- Download the relevant Group Policy for your Windows version:
- Download for Windows 11, version 24H2 – Windows 11 24H2 and Windows Server 2025 KB5053656 250412_03103 Known Issue Rollback
- After configuring the policy, restart devices to apply it.
- Microsoft is working on a final fix, to be released in a future Windows update.
- For more details on Group Policy KIR, see: How to use Group Policy to deploy a Known Issue Rollback
Microsoft Support KB5055523
If you need step-by-step guidance to deploy the KIR Group Policy, let me know!
Source: support.microsoft.com April 8, 2025—KB5055523 (OS Build 26100.3775) - Microsoft Support
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