About this update
About the Diagnostic and Telemetry service
Helping the overall application experienceThe Diagnostic and Telemetry service collects diagnostics information about functional issues on Windows systems that participate in the Windows Customer Experience Improvement Program (CEIP). CEIP reports don't contain contact information, such as your name, address, or telephone number. This means CEIP won't ask you to participate in surveys or to read junk email, and you won't be contacted in any other way. Windows users can make changes to their Windows CEIP participation in the Windows Customer Experience Improvement Program settings page by opening Control Panel and selecting Action Center > Change Action Center settings > Customer Experience Improvement Program settings.
Applications that have their own diagnostics and telemetry program such as Application Insights may depend on the service to transport the telemetry to Microsoft. Application users will be able to participate in these programs through the settings of the application.
Additional informationThis update uses SSL (TCP Port 443) to download manifests and upload telemetry to Microsoft that uses the following DNS endpoints:
Included in this update
- Fixes a previous issue in the service where when an advanced user applied the System File Checker Tool (sfc.exe), the .json files were unintentionally flagged as corrupt. This unintentional marking didn’t affect or indicate actual corruption on a device, and after you apply this update the files should no longer be marked as corrupt.
- Reduces the network connections on a Windows system that doesn't participate in the Windows Customer Experience Improvement Program (CEIP).
- Fixes an occasional event decoding issue in the Trace Data Helper (TDH) TdhGetEventInformation function that caused Event Tracing for Windows (ETW) events created by using the .NET Framework 4.6 or ILoggingChannel Interface to decode incorrectly.
How to obtain this update
Method 1: Windows UpdateThis update is provided as an Optional update on Windows Update. For more information on how to run Windows Update, see How to get an update through Windows Update.
Method 2: Microsoft Download CenterThe following files are available for download from the Microsoft Download Center:
|All supported x86-based versions of Windows 8.1||Download the package now.|
|All supported x64-based versions of Windows 8.1||Download the package now.|
|All supported x64-based versions of Windows Server 2012 R2||Download the package now.|
|All supported x86-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows 7||Download the package now.|
|All supported x64-based versions of Windows Server 2008 R2||Download the package now.|
|All supported IA-based versions of Windows Server 2008 R2||Download the package now.|
For more information about how to download Microsoft support files, click the following article number to view the article in the Microsoft Knowledge Base: