Windows 10: Windows Defender service stops randomly

Suddenly the Windows Defender service keeps turning itself off. I haven't detected a pattern leading to the behavior yet, it just seems to happen randomly. I'll glance down at the icon in the systray and see the red "x". I double-click it, then hit the "Restart" button in the Defender window to get the green checkmark back. Sometimes I open "Services.msc" and will see it's marked as "stopped". I can right-click and restart it that way. In the services list it's set to start automatically and if I open properties all the options are greyed out.

Opening Control Panel\All Control Panel Items\Security and Maintenance it shows Windows Defender is turned on, even when the tray icon has the red "x" and it's marked as stopped in service.msc. If I click on "View installed anti-virus apps" it shows McAffee Anti-Virus and Spyware, but it's set to "Off" and Windows Defender Antivirus set to "On". I didn't install the McAffee stuff, I'm pretty sure it came pre-installed and has been there a while without causing problems. Essentially, the red "x" and Services.msc says the service is stopped, but the Security and Maintenance window says it's on. I can run a scan no problem.

Tried running SFC and rebooting. Didn't help.

What the what is this nonsense?

This is an HP Envy laptop running Win10x64.

:)

 

windows explorer data usage

Windows explorer is using almost all my internet bandwidth making the browser's internet slower.

I have tries scanning with my entire computer with windows defender but didn't worked.

When i randomly stop some services from service host: local system it seems to stop.

But starts when restarting pc.

I have to "end task" windows explorer to use browser.

And the windows explorer also sometimes repeatedly flashes .

Can somebody help me with a solution

Thank You

 

how do I reinstall windows defender for windows 10

there is still pop up massage like this,

"The windows defender service service on local computer started and then stopped. some services stop automatically if they are not in use by other services or program."

what should I do?

I want to turn on windows defender.

 

Step 2: Download and run the McAfee Consumer Product Removal tool (MCPR)

Antivirus Software, Internet Security, Spyware and Malware Removal McAfee

 

Thanks!

Removed all traces of McAfee. Still happening.

 

Download this and run it as admin.

[Batch] Windows Defender Enable - Pastebin.com


You can also try:

Run SFC Command in Windows 10 Windows 10 Performance Maintenance Tutorials


If that does not help, I am afraid, that the only option is:

Repair Install Windows 10 with an In-place Upgrade Windows 10 Installation Upgrade Tutorials

 

The issue seems to have resolved itself. I'm not sure why, but it's been several days and Defender has not stopped, when before it was stopping several times a day.

If it was something I did, I have no idea what.