Microsoft released KB5055612 (https://support.microsoft.com/en-us/topic/april-22-2025-kb5055612-os-build-19045-5796-preview-428955dc-5f14-4dd8-a828-a1a3d316cb79) for Windows 10 version 22H2 optional non-security release preview (Windows monthly updates explained (https://techcommunity.microsoft.com/t5/windows-it-pro-blog/windows-monthly-updates-explained/ba-p/3773544)).
Highlights
- [Internal Windows OS] This update contains miscellaneous security improvements to internal Windows OS functionality.
Improvements
- [Graphics] Fix: The check for GPU paravirtualization (https://learn.microsoft.com/windows-hardware/drivers/display/gpu-paravirtualization) was case-sensitive in Windows Subsystem for Linux 2 (WSL2) (https://learn.microsoft.com/windows/wsl/about#what-is-wsl-2). This issue might potentially cause GPU paravirtualization support to fail.
- [OS Security] Updates to the Windows Kernel Vulnerable Driver Blocklist (DriverSiPolicy.p7b). Additions have been made to blocklist drivers with security vulnerabilities that have been used in Bring Your Own Vulnerable Driver (BYOVD) attacks.
- [System Guard Runtime Monitor Broker service (Known issue)] Fixed: The Windows Event Viewer might display an error related to SgrmBroker.exe, on devices that have installed Windows updates released January 14, 2025, or later. This error can be found under Windows Logs > System as Event 7023, with text similar to 'The System Guard Runtime Monitor Broker service terminated with the following error: %%3489660935'.
This update makes quality improvements to the servicing stack, which is the component that installs Windows updates. Servicing stack updates (SSU) ensure that you have a robust and reliable servicing stack so that your devices can receive and install Microsoft updates. For general information about SSUs, see Servicing stack updates (https://learn.microsoft.com/en-us/windows/deployment/update/servicing-stack-updates) and Servicing Stack Updates (SSU): Frequently Asked Questions (https://support.microsoft.com/en-us/topic/servicing-stack-updates-ssu-frequently-asked-questions-06b62771-1cb0-368c-09cf-87c4efc4f2fe).
Update: To get the update, go to Settings > Update & Security > Windows Update. The link to download and install the update can be found in the Optional updates available area.
Windows 10 update history (https://support.microsoft.com/en-us/topic/windows-10-update-history-8127c2c6-6edf-4fdf-8b9f-0f7be1ef3562)