Installing and searching for updates is slow and high CPU usage occurs in Windows 7 and Windows Server 2008 R2

https://support.microsoft.com/en-us/kb/3102810

This article describes an update that contains some improvements for Windows Update Client in Windows 7 Service Pack 1 (SP1) or Windows Server 2008 R2 SP1. This update has a prerequisite.
Issues that are fixed in this update

Issue 1

When you install updates by using System Center Configuration Manager, the installation takes a long time, and System Center Configuration Manager becomes overloaded.

Issue 2

The Svchost.exe process occupies 100 percent of CPU usage when you upgrade a Windows Update client to Windows 10.

How to get this update

Important If you install a language pack after you install this update, you must reinstall this update. Therefore, we recommend that you install any language packs that you need before you install this update. For more information, see Add language packs to Windows.

Method 1: Windows Update

This update is provided as an Optional update on Windows Update. For more information about how to run Windows Update, see How to get an update through Windows Update.

Method 2: Microsoft Download Center

The following files are available for download from the Microsoft Download Center.

Operating system Update
All supported x86-based versions of Windows 7 DownloadDownload the package now.
All supported x64-based versions of Windows 7 DownloadDownload the package now.
All supported x86-based versions of Windows Embedded Standard 7 DownloadDownload the package now.
All supported x64-based versions of Windows Embedded Standard 7 DownloadDownload the package now.
All supported x64-based versions of Windows Server 2008 R2 DownloadDownload the package now.
All supported IA-based versions of Windows Server 2008 R2 DownloadDownload the package now.

For more information about how to download Microsoft support files, select the following article number to view the article in the Microsoft Knowledge Base:

119591 How to obtain Microsoft support files from online services

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