Windows 10 KB5078885 Update: Key Details and Features

The Windows 10 KB5078885 update is now rolling out, specifically for PCs enrolled in the Extended Security Updates (ESU) program. This update is part of the March 2026 Patch Tuesday cycle, and Microsoft has provided direct download links for the offline installers (.msu). For most users, it’s recommended to download the update via the Windows Update settings.

Update Overview

The update, officially titled “2026-03 Cumulative Update for Windows 10 Version 22H2 for x64-based Systems (KB5078885)”, typically takes about five minutes to download and apply. This patch updates the operating system to Windows 10 Build 19045.7058 and addresses key stability issues, particularly those affecting certain GPU configurations.

System Stability Fix

Several users reported that recent Windows 10 updates caused stability issues, such as the Start menu, taskbar, and other OS components becoming unresponsive. While Microsoft did not officially acknowledge the issue prior to this patch, KB5078885 resolves a critical bug affecting specific GPU configurations. However, Microsoft has not disclosed which GPUs were impacted.

Download Links for Windows 10 KB5078885

For users managing multiple PCs or requiring offline installation, Microsoft has made the offline installer available via the Microsoft Update Catalog. However, for most PCs, updates can be downloaded directly through the Windows Update interface.

How to Download and Install

1. Go to Settings > Updates & Security > Windows Update.
2. Check for updates and download the KB5078885 patch.
3. If offline installation is preferred, download the .msu installer from the Microsoft Update Catalog.

What’s New in Windows 10 Build 19045.7058?

Secure Boot Certificate Updates

Microsoft is rolling out Secure Boot 2023 certificates to more devices in this update. Secure Boot certificates are used to validate software integrity during the boot process, ensuring protection against rootkits and other malware. Older certificates are set to expire in June 2026, making this update essential for maintaining the latest security standards.

It’s important to note that Secure Boot 2023 certificates are not automatically applied during this update. Devices must meet certain diagnostic criteria to qualify, as part of a controlled and phased rollout. According to Microsoft, servers are less likely to qualify due to limited diagnostic data, although they are not explicitly excluded from this process.

Additional Fixes

• A new warning dialog has been added for file selection in System Image Manager.
• Resolved an issue where File History in the Control Panel did not work correctly.

Signing Up for Windows 10 Extended Security Updates (ESU)

If you cannot find the KB5078885 update, it may be because general support for Windows 10 ended in October 2025. After this date, only PCs enrolled in the Extended Security Updates (ESU) program continue receiving updates. The ESU program provides eligible devices with security fixes until October 13, 2026.

To enroll in ESU, follow these steps:

1. Go to Settings > Updates & Security.
2. Navigate to the ESU enrollment page and follow the on-screen instructions.
3. Complete the enrollment process to ensure your device remains eligible for updates.

Known Issues in Windows 10 KB5078885

Microsoft has confirmed that there are no new issues identified in the March 2026 update for Windows 10. The update is deemed safe for installation across eligible devices.