What is this service/process in windows task manager? (LocalServiceNoNetworkFirewall)

Yes, it is. It is part of the System Service Host process which handles the dll files in Windows 10.

Hi Tyree. I'm Greg, an installation specialist and 10 year Windows MVP here to help you.

Type Firewall in TaskBar search, open WIndows Defender Firewall, from left hand tool bar choose Restore Defaults, then Restore Defaults. Restart PC.

If problems persist

Run a full scan with the most powerful on-demand free scanner Malwarebytes:

https://www.malwarebytes.com/mwb-download/.

In the Scan Settings first set it to include scanning for Rootkits.

If necessary run it in Safe Mode with Networking, or Safe Mode accessed by one of these methods: https://www.digitalcitizen.life/4-ways-boot-saf...

Clean up anything found, restart PC and then run again until it comes up clean.

Check for any remainders in Settings > Apps > Apps & Features, and also in each of your browser's Extensions, Home Page settings, Search service or Add-On's as shown here: https://community.box.com/t5/How-to-Guides-for-...

Then check for damaged System Files: https://www.lifewire.com/how-to-use-sfc-scannow...

If it cannot repair them see Step 10 here to continue: http://answers.microsoft.com/en-us/windows/wiki...

If you want to keep Malwarebytes as an on-demand scanner then you can turn off its Real Time trial version in it's Settings > Account Details tab.

I hope this helps. Feel free to ask back any questions and let us know how it goes. 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.

Why did you mark my post as unhelpful before you could have even begun to try any steps? Did you want the help of a senior MVP or not?

Now perform the steps I gave to see if it has any effect. Don't skip any steps as we often find out later the skipped step is the solution. Plus I will continue to help you until it's resolved so need to know what you've tried already.

Hi Tyree

My name is Andre Da Costa; an Independent Consultant, Windows Insider MVP and Windows & Devices for IT MVP. I'm here to help you with your problem.

It is safe, it can sometimes use up significant CPU usage, if its doing the same to your system, launch Windows Defender Security Center

Click Firewall and Network protection

Click Restore firewall to default

Hi I'm Peter an independent advisor, I've had the same problem myself and found the solution which is quite simple :

Go to settings -> update & security -> Windows Defender -> Open Windows Defender -> Firewall & Network protection

Then you need to disable the firewall for all the types of networks

once that's done click on restore settings

That should do the trick and you're cpu usage should return to normal.

Hope it helps, it did for me. Its worth running a virus scan too incase your system is infected

I'm not having any problems with cpu, i just wanna confirm if this is normal or not?