Summary: Microsoft has released the mandatory KB5055518 cumulative update for Windows 10 22H2 and 21H2, addressing critical security vulnerabilities and introducing several enhancements. This update includes fixes for nine issues, particularly regarding browser defaults for EEA users and printer bugs. Users can manually check for updates through Windows Update or download the update from the Microsoft Update Catalog.
Affected: Windows 10 (22H2 and 21H2)
Keypoints :
- This update is mandatory and includes important April 2025 Patch Tuesday security updates.
- Fixes six actively exploited zero-day vulnerabilities to enhance system security.
- Introduces EEA web search support, allowing links to open in the default browser.
- Resolves issues with USB dual-mode printers outputting incorrect text.
- Improves usability by fixing crashes in File Explorer thumbnails.
- Allows temporary files to be securely stored in “C:WindowsSystemTemp.”
- Known issues include potential update failures with Citrix SRA version 2411 installed.
- Corrects EventViewer error messages related to SgrmBroker.exe, which can be ignored.
- The update can be installed via Windows Update or directly from the Microsoft Update Catalog.