Microsoft released cumulative update KB5078885 for Windows 10, version 22H2 as part of the March 2026 Patch Tuesday for devices enrolled in the Extended Security Updates (ESU) program.
Support for Windows 10 has ended: as of October 14, 2025, the system receives updates only through the Extended Security Updates (ESU) program. After installing the update, bugs are fixed and system stability is improved. The main changes affect Secure Boot, File History, the graphics subsystem, and Windows deployment tools.
- Security updates. This update includes security fixes and quality improvements that are also included in update KB5075912, released on February 10, 2026. The update contains various security improvements for internal OS features as of March 2026. March 2026 Patch Tuesday: Microsoft fixed 79 security issues, including two publicly disclosed zero-day vulnerabilities obtained from a trusted source.
- Windows System Image Manager. A warning dialog box has been added to help users ensure that the selected catalog file is obtained from a trusted source.
- File History. The reliability of the File History feature in Control Panel has been improved when creating backups. Backups are now correctly created for files whose names contain certain Chinese characters and characters from the Private Use Area.
- Graphics. A stability issue affecting some graphics processing unit (GPU) configurations has been resolved.
- Secure Boot. Windows quality updates now use additional data to more accurately determine which devices can automatically install new Secure Boot certificates. Determination is based primarily on diagnostic data from client devices. Due to limited data, server systems rarely qualify for automatic updates, though they are not formally excluded. Devices receive new certificates only after the system records a sufficient number of successful update signals. This ensures a controlled and phased rollout of the update.
If previous updates are already installed on the device, the system will download and install only the new fixes included in the KB5078885 package. Cumulative update 5078885 for PCs is installed automatically through Windows Update. To check, go to Settings > Update & Security and click Check for updates. A system restart is required to complete the installation. After the update, the Windows 10 build number (version 22H2) will change to 19045.7058.
| Feature / Change | Performance Increase/Decrease | Optimization | PC Speed Impact | Gaming Optimization |
|---|---|---|---|---|
| Windows System Image Manager — trusted source warning dialog | ⚪ No change (UI-only addition) | 🟢 High (prevents accidental use of untrusted catalog files) | ⚪ No direct impact | ⚪ Not applicable |
| File History — improved backup reliability for Chinese characters and Private Use Area | 🟢 Slight increase (successful backups reduce retry overhead) | 🟢 High (backup correctness for previously failing filenames) | 🟡 Minor (background I/O less wasteful) | ⚪ Not applicable |
| Graphics — GPU stability fix | 🟢 Medium (eliminates stalls/crashes on affected configs) | 🟢 Medium (more stable rendering pipeline) | 🟡 Minor to Medium (smoother UI on affected GPUs) | 🟢 Medium (fewer frame drops/crashes in GPU-bound scenarios) |
| Secure Boot — phased certificate rollout using diagnostic data | ⚪ No direct performance change | 🟢 High (controlled, data-driven rollout reduces failed updates) | ⚪ No direct impact | ⚪ Not applicable |
Official announcement on the Microsoft website.
The last 10 Windows updates:
| Update | Build | Version | Windows | Channel | Date |
|---|---|---|---|---|---|
| KB5127757 | 28120.3181 | 26H1 | Windows 11 | Experimental | 2026-10-07 |
| KB5127758 | 26220.9606 | 25H2 | Windows 11 | Beta | 2026-10-07 |
| KB5127754 | 28020.3172 | 26H1 | Windows 11 | Beta | 2026-10-07 |
| KB5127753 | 26340.9616 | 26H2 | Windows 11 | Experimental | 2026-10-07 |
| KB5124192 | 28120.3151 | 26H1 | Windows 11 | Experimental | 2026-10-02 |
| KB5124196 | 28020.3142 | 26H1 | Windows 11 | Beta | 2026-10-02 |
| KB5124197 | 26220.9587 | 25H2 | Windows 11 | Beta | 2026-10-02 |
| KB5124193 | 26340.9596 | 26H2 | Windows 11 | Experimental | 2026-10-02 |
| KB5124166 | 26220.9568 | 25H2 | Windows 11 | Beta | 2026-09-25 |
| KB5124163 | 28020.3112 | 26H1 | Windows 11 | Beta | 2026-09-25 |