Windows 10: ntoskrnl.exe using 50% of cpu.

The process appears as System in task manager and shows the .exe name when clicked on properties. Its using a lot of the cpu, and id like to know how to fix that. It wasnt like that a few days ago. Thanks

submitted by /u/Luis_Santeliz
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:)

 

BSOD ntoskrnl..exe+1b35e0

Hi, KirbyBakken

My name is Maritza and I am an Independent Advisor. I would be happy to help you today.

Check this link, I hope it helps

https://www.thewindowsclub.com/ntoskrnl-exe-hig...

Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised
on the site before you decide to download and install it.

Let us know if these steps help you to resolve the issue.

 

AppleMobileDeviceService.exe consistently takes 50% of CPU usage.

Original title: An App. called AppleMobileDeviceService.exe consistently takes 50% of CPU usage. I am not using iTunes. Apple says iI should ask Microsoft. I use AX oper. sys.

An App. called AppleMobileDeviceService.exe consistently takes 50% of CPU usage. I am not logged on to iTunes, nor is my iPod connected to my PC when this .exe runs with 50% usage. Apple suggested I contact Microsoft. I use AX oper. sys. Apple suggested
contacting Microsoft.

 

Fix ntoskrnl high cpu usage for Windows 10 Pro?

In mid - late December 2019 I noticed a lag in starting applications after booting (or powering up) my Windows 10 desktop. Outlook, Word, Excel, and others has a noticeable delay in starting. Once I noticed this behavior I started task manager and noticed
a process named 'System' running consistently at a CPU rate of 15 - 17%. No matter how long the system was running, even with no active applications started or idle, the CPU rate never changed for this 'System' process. I've watched task manager before and
have never had a process 'System' running at this rate. Normally when present this 'System' process runs at around 0.2 - 0.4% CPU.

I selected 'System' looked at properties and it is the 'ntoskrnl' process. Next, I went to Micorosoft technet and forums looking for information related to this issue. And, of course, I found a plethora of questions, discussions, etc., all involving ntoskrnl
and high cpu utilization, some dating back to 2016. I followed the ones posting in 2019 and tried all the suggestions for fixing this issue. Uninstall this, remove that, kill items in startup, perform a clean boot, check registry and change this, etc., etc.,
etc..

Non of these worked. I returned the system to the current configuration I've been running for 3 years. Here is what I noticed: If I rebooted (selected 'Restart'), the system rebooted and the 'System' process aka 'ntoskrnl' process was running at 0.2 - 0.4
CPU rate, after about 20 -30 seconds. If I 'shut down' the system to a power off state and then start the system up there is always the 'ntoskrnl' running at the high CPU rate - forever. Perform a reboot (even an immediate reboot) then 'ntoskrnl' is running
at the normal 0.2 - 0.4% CPU rate. And there is no lag in starting Outlook or Word or Excel, or etc. The system is back to running normal performance only after a reboot.

So why is ntoskrnl having the aberrant behavior? Please help by looking into this. This issue with ntoskrnl keeps resurfacing and Microsoft has not fixed this.

Here is my system information- Windows 10 Pro 64 bit, 16GB RAM, Intel i7-6700T CPU, 512GB SSD, all updates current as of Jan 3 2020

Two suspicious updates:

1) December 10, 2019-KB4533002 Cumulative Update for .NET Framework 3.5 and 4.8 for Windows 10 Version 1903 and Windows Server 1903 RTM and Windows 10, version 1909 and Windows Server, version 1909

2) December 10, 2019—KB4530684 (OS Builds 18362.535 and 18363.535)

The ntoskrnl properties lists the following: Created Wednesday Dec 11, 2019, Location C:\Windows\System32 - this incredibly suspicious because this is the same time frame that I noticed the system behaving differently. AND it certainly suggests that one
of these updates has corrupted the WIndows 10 Pro performance in the ntoskrnl service.