KB4515384 CPU Spiking

Windows Desktop Windows 10
1

In the new update KB4515384, my CPU performance reaches an extremely high spike that slows down my computer completely, almost to a halt. I did the usual, (Closed intensive programs in task manager, defragging my PC, formatting the disk, restarting my PC and looking for help and troubleshooting on support and forum sites.

Can anybody help me?
Thanks.

2

open windows update & security settings, click on windows update and go to view update history and click uninstall updates. choose update which has problem about cpu usage and uninstall it

3

Hi @GeorgeRooke65,

In Windows 10, your device is always kept up to date with the latest features and fixes. Windows Updates are installed automatically, with no need to select which updates are needed or not needed. In rare cases, a specific update might temporarily cause issues with your device, and in this case you will need a way to prevent the problematic update from reinstalling automatically the next time Windows Updates are installed.

To temporarily prevent the update from being reinstalled until an updated fix is available, a troubleshooter is available that provides a user interface for hiding and showing Windows Updates and drivers for Windows 10. You can obtain and run the "Show or hide updates" troubleshooter by downloading it from the Microsoft Download Center.

Hope the above solves your issue.

4

To go back to an earlier build of Windows 10, open Start Menu > Settings > Update & Security > Recovery.
or Try to update windows 10 latest versions
it may help you

5

which proc \ application is hogging the CPU?

6

Hello,
some users reported that the Windows Desktop Search came up with no results and Cortana caused high CPU usage or sudden CPU spikes after installing KB4512941. Microsoft has confirmed these issues and promised to provide an update in the upcoming release. Now the fix is released. That’s KB4515384. To learn more about it, let’s check out its changelog below.

Improvements and fixes included in KB4515384 (OS Build 18362.356)

Windows 10 security update KB4515384 (OS Build 18362.356) comes with some quality improvements and fixes, including:

  • Updates to improve security when using Internet Explorer, Microsoft Edge, networking technologies, and input devices such as a mouse, keyboard, or stylus.
  • Updates for verifying user names and passwords.
  • Updates for storing and managing files.
  • Provides protections against a new subclass of speculative execution side-channel vulnerabilities, known as Microarchitectural Data Sampling, for 32-Bit (x86) versions of Windows (CVE-2019-11091, CVE-2018-12126, CVE-2018-12127, CVE-2018-12130). Use the registry settings as described in the Windows Client and Windows Server articles. (These registry settings are enabled by default for Windows Client OS editions and Windows Server OS editions.)
  • Addresses an issue that causes high CPU usage from SearchUI.exe for a small number of users. This issue only occurs on devices that have disabled searching the web using Windows Desktop Search.
  • Security updates to Microsoft Edge, Internet Explorer, Microsoft Scripting Engine, Windows App Platform and Frameworks, Windows Input and Composition, Windows Media, Windows Fundamentals, Windows Authentication, Windows Cryptography, Windows Datacenter Networking, Windows Storage and Filesystems, Windows Wireless Networking, the Microsoft JET Database Engine, Windows Kernel, Windows Virtualization, and Windows Server.

How to get KB4515384 (OS Build 18362.356)

KB4515384 now is available in Windows Update, Microsoft Update Catalog and Windows Server Update Services (WSUS).

It can be downloaded and installed automatically from Windows Update. Get to Settings > Update & Security > Windows Update and then click on Check for updates .