Windows 10: MsMpEng.exe increases its usage when pc is not in use?

See picture above.MsMpEng.exe never has a high usage when im using my pc. but sometimes i go to the toilet or im doing something in my house and i literally hear my pc's fans turn on. and MsMpEng.exe gets like 5-10%+ cpu usage out of nowhere. then as soon as i start moving my mouse again the MsMpEng.exe cpu usage drops down????? ****? it almost seems like its trying to secretly scan my pc or whatever but i dont want these things.why is this happening? its really annoying and i dont want these things to happen. i dont want random cpu usage increases because it makes me highly sceptical. apart f

:)

 

AntiMalware Service Executable HIGH CPU USAGE

Hi Ali. I'm Greg, an installation specialist, 10 years Windows MVP, and Volunteer Moderator here to help you until the problem is solved.

See fixes for high CPU usage for MsMpEng:

https://thewindowscentral.com/msmpeng-exe-high-...

https://www.itechtics.com/msmpeng-100-usage-cpu...

https://www.techcrises.com/windows-10/msmpeng-e...

If that isn't enough go over this checklist to make sure the install is set up correctly, optimized for best performance, and any needed repairs get done:

http://answers.microsoft.com/en-us/windows/wiki...

Start with Step 4 to turn off Startup freeloaders which can conflict and cause issues, then Step 7 to check for infection the most thorough way, then step 10 to check for damaged System Files, and also Step 16 to test a new Local Admin account. Then continue
with the other steps to go over your install most thoroughly.

Update your drivers and BIOS/UEFI firmware from PC or motherboard maker's Support Downloads web page, using the full model number, Serial Number or Dell Service Tag on sticker. Compare the latest drivers available for download with the ones presently installed
in Device Manager reached by right clicking the Start Menu. Make sure you have the latest BIOS or UEFI firmware, Chipset, Display (Video), Sound, USB3, Bluetooth, Network and all other drivers, or else download and install the latest now.

Updating drivers from the Device Manager or Windows Update is rarely enough. The most basic thing we need to learn to maintain a PC is keep the latest manufacturer's drivers installed from their Support Downloads web page.

If nothing else works then do a Repair Install, by installing Media Creation Tool, open tool and choose to Upgrade Now. This reinstalls Windows while keeping files, programs and most settings in place, and is also the most stable method to advance to the latest
version.
http://windows.microsoft.com/en-us/windows-10/m...

I hope this helps. Feel free to ask back any questions and keep me posted. If you will wait to choose if I resolved your problem, I will keep working with you until it's resolved.

________________________________________________________

Standard Disclaimer: There are links to non-Microsoft websites. The pages appear to be providing accurate, safe information. Watch out for ads on the sites that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly
research any product advertised on the sites before you decide to download and install it.

 

Off the chart (literally!) disk usage

Try the steps found here. And happy birthday!

 

MsMpEng extreme and almost constant disk usage after Windows update (aprox.2016-08-03)

MsMpEng and System constantly (mostly) reads disk at high rate. The problem has started couple of days ago. The only thing that was installed during that time was windows update (ok and Adobe and Steam updates).

After some time the disk activity will stop, however it will resume sometime latter.
And no, I had not installed any third party security applications.

In resource monitor it can be seen that Diks activity is 2-8 mb/sec and process name is either System or MsMpEng .

Sometimes there are significant pagefile usage (computer has 4gb) and nothing is currently running (like now I am running only Internet Explorer with this Microsoft page and my Windows are using pagefile like there is no tomorow) . When pagefile usage creeps
up then all kinds of processes are using the pagefile. However resource monitor memory tab shows bigest process beeing MsMpEng with 644kb (note again it should not cause 4gb system to run out of memory). Right now system is writing 2mb/sec (read 0.4kb/sec) to
pagefile and MsMpEng is reading 2mb/sec from pagefile.

And no, running said Windows defender does not show up any viruses.

Basicaly - this is rant about apparently bugy latest Windows update.