Hold off installing KB4512941 for Windows 10 v1903.
Immediately after 2019-08 Cumulative Update for Windows 10 Version 1903 for x64-based Systems (KB4512941):
* Cortana is now using 290MB up into the 330MB range of RAM, as reported by Task Manager.
* Cortana is now constantly using at least 30% CPU, as reported by Task Manager.
* Cortana power usage is very high, as reported by Task Manager.
And there's no uninstall for the update.
I reported all the Cortana related issues to Microsoft.
I had just restored from a Macrium Reflect image. And decided to give it a go once more after using the registry editing instructions in that link before allowing it to download and install, and this time it worked without issue.
Have to say with every big change Microsoft makes it's making Windows 10 seem stupid to keep using because there's always some damned issue, which is getting very old very fast.
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There is chatter about Cortana high CPU usage at the link below. Appears to be some fixes for it too.
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<a href="https://www.tenforums.com/windows-10-news/139532-cumulative-update-kb4512941-windows-10-v1903-build-18362-329-aug-30-a-2.html" rel="external nofollow" style="" target="_blank">https://www.tenforums.com/windows-10-news/139532-cumulative-update-kb4512941-windows-10-v1903-build-18362-329-aug-30-a-2.html</a>
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Of course I did and still do use O&O ShutUp 10, and O&O AppBuster. From other reports on the web they seem to not be the issue, but the update itself.
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Strange how changing a single Bing related registry setting could make such a drastic difference.
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That is why I never use tools like ShuUp, the settings come back to haunt you.
Most of the people with issues had used it or messed with things using other tools.
Thanks for sharing the info on the camera and microphone. Mine were disabled in Device Manager, the update re-enabled the HD WebCam but not the microphone. I've re-disabled the cam.
That seems to have worked, Cortana is still in task manager but it's back to it's previous permanently suspended state. (I'll go check the camera and mic again).
Go to Windows Update > View update history > Uninstall Updates.
In the screen that comes up Double click on the update and then click Yes to uninstall it.