Windows 10: Windows 10 KB4512941 (Build 18362.329) is causing high CPU usage

Microsoft has just shipped Windows 10 KB4512941 to anyone who hits the ‘Check for updates’ button in Windows Update and click on the new ‘Download and install now’ option, which has been made available for optional updates or feature updates.

Windows 10 KB4512941 fixes the broken Windows Sandbox, black screen issue hitting Remote Desktop connections and several other bugs. However, some users have run into serious problems after installing the latest update that advances PCs to Build 18362.329.

According to various reports on forums (1, 2) and Feedback Hub, a number of devices may startup with a high CPU usage problem, degrading the overall performance of the systems. The culprit appears to be a botched version of Cortana that the firm has reportedly shipped in this release.

The Cortana (SearchUI.exe) process is generating CPU usage spikes for some users and the process has recorded a bump of around 30-40 percent in Task Manager, though the usage depends on the number of cores a processor has.

“After installing KB4512941 (OS Build 18362.329) the pop-out window with the search results stays blank, SearchUI.exe is constantly using CPU and ~200MB of memory,” a user documented the problem on Microsoft’s Feedback Hub.

“Cortana is consistently running above 35% CPU usage and 150 MB memory as reported by Task Manager, for at least one day now. Despite this fact, using the Search button next to the Start Menu pops up a dialog that will not display any items upon entering any search query, even after waiting for several minutes,” another user complained about the CPU usage on Feedback Hub.

Testers reported the problem


It’s important to note that Microsoft actually tested KB4512941 with Windows Insiders in the Release Preview Ring for more than a week before shipping the update to the general public.



According to some posts on Feedback Hub, reports of high CPU usage were submitted multiple times by testers earlier this week, but the reports appear to have been ignored because they weren’t upvoted enough.

How to fix Cortana (SearchUI.exe) high CPU usage


Some users have claimed that deleting a Registry key, which prevents the Start menu search from sending local search queries to Bing, resolves the CPU usage problem.

• Computer\HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Search
• Reg Name: BingSearchEnabled
• Reg Value: 0

If you don’t want to play with Windows Registry, you should consider uninstalling the update. You can uninstall this cumulative update by following the steps outlined below:

• Hit Windows+I to open the Settings app.
• Click the “Update & security” option.
• On the Update & security screen, click the “View update history” option.
• On the next screen, click the “Uninstall updates” link.
• Select the update (KB4512941), and then click the “Uninstall” button.

Microsoft hasn’t acknowledged the problems with the optional August update yet.

The post Windows 10 KB4512941 (Build 18362.329) is causing high CPU usage appeared first on Windows Latest

Weiterlesen...

 

WIN10 1703 update cause Explorer.exe high CPU usage

Hi,



Glad you reached out. First, we would like to know if Explorer.exe
is the only cause of high CPU usage. Because the common cause of high CPU usage are the following:

- Windows 10 Memory leak after the update.

- Driver incompatibilities after the update.

- Multiple startup applications

• 
  

We'll be waiting for your update.

 

CertPropSvc causes high CPU usage

Thanks for the response.

There are several reason on why the said service is causing high CPU usage on your compuer. You can try out the following and see if the issue will persist:

• Since you have mentioned that your computer is currently running on build
  17134.165, you can update your computer to Build 17134.191 and see if the issue will persist..
• Check if there's an updated version of the ID50 service that is compatible to the build 17134 or April Update.

If the steps above are unable to fix the isse, you can also report the issue directly to the Developer Team by providing a feedback using the Feedback Hub and a fix will be released on the future updates. Click on this

link on how to Send feedback to Microsoft with the Feedback Hub app.

For other queries, you're just a post away.

 

CertPropSvc causes high CPU usage

Hello,

a couple of weeks ago I noticed that my computer started to slow down due to high CPU usage.

After some research I figured out that this is caused by a service called
CertPropSvc (Microsoft Smartcard Certificate Propagation Service).

If I manually stop the service everything is back to normal but as soon as I start
CertPropSvc the CPU usage rises to 60% again.

• Is this a known issue or should I worry about my computer?
• How can I make sure that the configuration of this service and the corresponding files weren't manipulated?
• Which drawbacks can I expect if I just set the startup type to 'disabled'?

Please let me know if there is a way to fix this problem.

In case it is important: right now I've installed Windows 10 Pro (version 1803, build 17134.165).

Thank you very much in advance!