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Update for customer experience and diagnostic telemetry
This article describes an update for Windows 8.1, Windows Server 2012 R2, Windows 7 Service Pack 1 (SP1), and Windows Server 2008 R2 SP1. Before you install this update, check out the Prerequisites section.About this update
This update introduces the Diagnostics and Telemetry tracking service to existing devices. By applying this service, you can add benefits from the latest version of Windows to systems that have not yet upgraded. The update also supports applications that are subscribed to Visual Studio Application Insights.
About the Diagnostics Tracking service
Helping the overall application experience
The diagnostics tracking service collects diagnostics about functional issues on Windows systems that participate in the Customer Experience Improvement Program (CEIP). CEIP reports do not contain contact information, such as your name, address, or telephone number. This means CEIP will not ask you to participate in surveys or to read junk email, and you will not be contacted in any other way.
For any released product with an option to participate in CEIP, you can select to start or stop participating at any time. Most programs make CEIP options available on the Help menu, although for some products, you might have to check settings, options, or preferences menus. Some pre-released products that are under development might require participation in CEIP to help ensure that the final release of the product improves frequently used features and solves common problems that exist in the pre-released software.
Additional information
The included service uses SSL (TCP Port 443) to download manifests and upload data to Microsoft when data is available for upload. The service uses the following DNS endpoints:
This update contains the following two manifests that are occasionally updated by the Diagnostic Tracking Service:
- telemetry.ASM-WindowsDefault.json
- utc.app.json
The two files are marked as static files in the update. When an advanced user runs the System File Checker Tool (sfc.exe), the files are unintentionally flagged as corrupted. There is no impact or actual corruption on a device that is running this update, and this issue will be fixed in a later service update.
Windows 7 support
The Windows 7 offering also supports the kernel updates that were deployed separately to Windows 8.1 through security update 3045999.
