Kb971644 -

: Improved support for syncing media and files with portable devices like cameras and smartphones. Troubleshooting Common Installation Issues

– I’d be glad to write a detailed, accurate article for a valid KB number you provide, including: kb971644

Based on the identifier , this article is likely referring to the specific update for Windows 7 and Windows Server 2008 R2 . : Improved support for syncing media and files

: This improved how the OS handled printing, high-fidelity graphics rendering, and the XPS document format. including: Based on the identifier

The update is a "wrapper" or container. It does not perform changes itself but triggers the installation of four specific sub-updates:

Run the Command Prompt as an administrator and execute sfc /scannow .

Here is a feature coverage article regarding KB971644.