Microsoft Delivers March 2026 Windows 10 ESU Patch
Microsoft pushed KB5078885 to Windows 10 systems on March 10, 2026. This Extended Security Update continues the company's paid support program for the operating system that reached end-of-life in October 2025.
The update arrives as part of Microsoft's monthly ESU cycle. It's designed exclusively for organizations that purchased Extended Security Updates to keep Windows 10 systems patched beyond the official support deadline.
ESU Subscribers Get Continued Windows 10 Support
Only Windows 10 systems with active ESU licenses receive KB5078885. Regular consumer and business Windows 10 installations won't see this update through Windows Update.
Organizations paying for Extended Security Updates can deploy the patch through their standard update management tools. The ESU program costs $61 per device for the first year after Windows 10's end-of-life.
Installing KB5078885 on ESU Systems
ESU subscribers can install KB5078885 through Windows Update, WSUS, or System Center Configuration Manager. The update requires a valid ESU license key to activate.
Microsoft recommends testing the update in non-production environments first. Organizations should verify their ESU licensing status before attempting installation to avoid activation issues.
