Essential Windows 10 Update: KB5055518 Enhances Security and Fixes Crucial Bugs

Latest KB5055518 Update for Windows 10: What You Need to Know

Microsoft has rolled out a significant update for Windows 10 versions 22H2 and 21H2. The KB5055518 cumulative update is packed with critical improvements and security measures aimed at enhancing user experience and system security.

Key Changes and Security Enhancements

This mandatory update integrates crucial security enhancers from Microsoft’s April 2025 Patch Tuesday, targeting six actively exploited zero-day vulnerabilities. It also progresses Windows 10 build to 19045.5737 for version 22H2 and 19044.5737 for version 21H2, solidifying both system stability and performance.

Installation Guide

Users can apply this update by navigating to Settings > Windows Update and selecting ‘Check for Updates’. Although the update initiates automatically, scheduling a restart to complete the installation can be configured to suit user convenience.

Manual Download Option

For manual installation, the update can be downloaded from the Microsoft Update Catalog.

Detailed Improvements and Fixes in KB5055518

• Regional Support: Revised Daylight Saving Time for Chile’s Aysen region, reflecting government changes set for 2025.
• Font Enhancements: Introduction of Noto CJK fonts providing extensive support for Chinese, Japanese, and Korean scripts.
• Mobile Accessibility: Updated Country and Operator Settings Asset profiles for enhanced mobile connectivity.
• Printing Accuracy: Resolved issues with dual-mode USB connected printers that previously produced garbled text.
• Remote Desktop Functionality: Troubleshooting functionality in Remote Desktop sessions has been optimized.
• File System Management: Fixes applied to ensure stability of thumbnails in File Explorer and secure temporary file storage.
• Search Improvements: Enhanced search capabilities and browser integration for users in the European Economic Area (EEA).

Known Issues and Workarounds

Despite the numerous enhancements, two notable issues persist, including a conflict with Citrix Session Recording Agent and an EventViewer error. Workarounds involve service management and updates, detailed further in Microsoft’s official guidance.

For a complete breakdown of improvements and ongoing issues, the KB5055518 support bulletin offers exhaustive details. Further information on the latest security mitigations can be reviewed in the previous month’s KB5053643 preview update bulletin.