The Windows Update service is an essential feature in all Windows versions, because it is needed to provide all the available important and optional updates needed for the proper Windows operation and security.
In such cases your system may become slow or unresponsive, because the Windows Update service (svchost.exe) causes high CPU usage. In many cases, even in fresh Windows installations, the Windows Update is not working as expected, or it stuck when checking for updates or it displays several errors whenever you try to search for the available updates. This tutorial contains several methods to fix Windows Update Problems in Windows 7/8/8.1 & Server 2008/2012 OS.