Windows 10: Windows Defender'This Service Couldn't be Started'

Could Someone Help me , i have been searching for solution on youtube but seems like nothing is helping

:)

 

Lumia 650, we couldn´t connect to the update service

Hi,

Have a lumia 650 with Version 1511, OS build 10.0.10586.494 is this the latest version?

When i check for updates i get this: we couldn´t connect to the update service, we`ll try again later..

I have internet connection via WiFi and a microsoft account set up.

 

Windows Defender disabled and is unable to start


OK. I am not sure if you can complete the steps below.......................
In the search box, type services.msc > Enter
Items in the Services box are listed alphabetically.
Scroll down to Windows Defender Service...........................
at Status heading, it should be.................................... Running
at Startup type, it should be......................................... Automatic







If that is not what yours said, right click at Windows Defender Service > click Properties >
can you change the Startup type to Automatic and Service status to Start ?
If yes, do so and click OK when done.

 

windows defender & security center services keep turning off


Are you running any other AV or did you have one running in the past? If you didn't use an uninstaller for the AV, then the remnants of it could be causing the problem. Normally any time you install an AV it disables Defender by default.

If you are getting any error codes please list those, that will be helpful in helping you.

As torre suggested, might be a good idea to do a reset or even a reinstall.

Reset Windows 10 - Windows 10 Forums

Windows 10 - Clean Install - Windows 10 Forums

There are also some suggestions listed here:

Unable to turn on Windows Defender in Windows 7 / 8 / 10