For an AMD-powered Copilot+ PC running Windows 11 version 24H2 or 25H2, Microsoft documents the August 27, 2026 Image Processing AI component update as version 1.2608.951.0, identified by KB5124878. The update is delivered automatically through Windows Update after the latest cumulative update for the relevant Windows version is installed.
This article covers that specific AMD Image Processing update. It does not establish that every Copilot+ PC receives the same component, version or KB number.
What the August update applies to
Microsoft’s support entry says KB5124878 applies to Windows 11 24H2 and 25H2, all editions, but only to Copilot+ PCs. It describes the affected system branch as AMD-powered.
The documented component supports on-device image understanding and processing across Windows features and apps. Microsoft names tasks including scaling, segmentation, foreground and background extraction, and visual analysis. The supplied support entry does not identify every Windows feature or app that uses the component.
The version and KB number to look for
| Item | Documented value |
|---|---|
| Component | Image Processing AI component |
| Hardware branch | AMD-powered Copilot+ PCs |
| Windows scope | Windows 11 24H2 and 25H2, all editions |
| Availability date | 2026-08-27 |
| Version | 1.2608.951.0 |
| KB | KB5124878 |
Microsoft’s broader AI-component release table also lists the August 27 version 1.2608.951.0 for Image Processing, alongside other AI components and KB mappings. That table contains multiple hardware-specific entries, so a different component or hardware branch should not be assumed to use KB5124878.
How Microsoft says to verify the update
Open Settings > Windows Update > Update history. Microsoft says the installed entry should appear as:
2026-08 Image Processing version 1.2608.951.0 for AMD-powered systems (KB5124878)
The support entry says this update replaces KB5121644. It also lists the latest cumulative update for Windows 11 24H2 or 25H2 as a prerequisite. The supplied evidence does not provide the cumulative update’s KB number, so this article does not add one.
What Windows Update does here
For this documented update, Microsoft says Windows Update downloads and installs it automatically. That is a rule for KB5124878 on the stated AMD Copilot+ PC and Windows 11 scope. It is not evidence that every Windows AI model or every AI component is installed automatically in the same way.
Microsoft’s Windows AI API documentation describes a wider model-delivery picture. On Copilot+ PCs, supported APIs run on the NPU. For some APIs and hardware paths, models may instead be downloaded on demand, while Video Super Resolution follows a different model-delivery rule. Those statements describe API and model availability, not a replacement rule for the specific KB5124878 verification entry above.
What this check can—and cannot—tell you
If the exact KB5124878 entry is present, it matches Microsoft’s documented August 2026 Image Processing version for AMD-powered Copilot+ PCs. The supplied sources do not establish that the entry guarantees access to every Windows AI API, every image feature, or any particular app experience.
The Windows AI API page lists hardware support separately for individual APIs. It says Copilot+ PCs use the NPU for supported APIs, while GPU and CPU support can vary by API. A general Copilot+ label therefore should not be used as a complete hardware-to-feature matrix.
Research method and limitations
This research-based guide was prepared from the supplied public Microsoft excerpts retrieved on September 19, 2026. The release-information page was only partially available and explicitly truncated, so this article uses only the visible rows and does not claim to reproduce the full component history. The supplied competitor excerpts were secondary coverage and were used only to review topic overlap, not to establish technical facts. No hands-on inspection, lab test, benchmark or comprehensive hardware review was performed.
Text version of the diagrams
- Who This Update Applies To: AMD Copilot+ — Windows 11 24H2/25H2; KB5124878 — Image Processing 1.2608.951.0; Other Systems — Scope not established
- What The Check Proves: Update History — Confirms KB5124878 entry; Component Scope — Image Processing only; AI APIs And Models — Availability varies by API
