Windows 10: Why has my Windows Defender service disappeared?

Today I logged on to my pc and got an error saying that my security services were turned off or something, so I prompted me to turn them on but when i tried to I was greeted with another error message saying it's not possible or something. I noticed that in my task manager I still have the process "Antimalware Service Executable" running which is strange.When I open Windows Security it's completely empty and when I got to manage providers it says no providers.I suspect i have malware on my pc, a while ago I noticed a trojan and some other kind of malware but windows security said it dealt with

:)

 

Task to auto update windows defender definitions disappears

My mom has a new laptop with windows 8.1, we always set the windows updates to manual.
On our other windows 8.1 computers I have created a task for auto updating windows defender definitions, which works fine for us.

This is how I created this task:

"Click on "Create Task", name it what you like (mine is Daily Signature Update), set the trigger as the time you want it to run every day.

For Action browse to Program Files\Windows Defender\MpCmdRun.exe and select it. In "Add arguments" add -SignatureUpdate -MMPC"

But somehow this task disappears once it has run on my mom's laptop.
I'm logged in as admin and then I also tried it with running the task scheduler as admin, the task just disappears every day for some reason, while it works fine on our other windows 8.1 computers.

Anyone an idea why this task disappears every time?

Thanks.

 

Windows Defender problem

Hi Ernst,

To troubleshoot this issue, we suggest that you check the Windows Defender service if it's running. If you are using a third party spyware/malware program, it may disable the Windows Defender service. To do this, please follow the steps below:

• Press Windows + R key.
• Type services.msc.
• Right-click Windows Defender service and click
  Start.

Let us know the result.

 

Securing Windows 2000/XP/Server 2003 services HOW TO

I will try changing their settings sometime, the one thing I've noticed about this guide is that it doesn't list the Windows services that NEED to be left as local system, so some people might not be too sure what they're doing and worry about any that aren't listed. Just a suggestion that you might want to include in any future revisions. *Smile

The non-default ones I have that you have not listed are:

.Net Runtime Optimization Service v2.0.50727_X86
Ati HotKey Poller
ATI Smart
AVG E-mail Scanner
AVG7 Alert Manager Server
AVG7 Update Service
BlueSoleil Hid Service
Bluetooth Support Service
ewido anti-spyware 4.0 guard
iPod Service
Messenger Sharing USN Journal Reader Service
Service Layer
Windows Defender Service

The problem is that the only ones of these I actually use are The AVG and Windows Defender services and occasionally the "Service Layer" service (related to Nokia PC Suite) and the "Messenger Sharing USN Journal Reader Service" (related to WindowsLive Messenger). Anyway, I'll see how much I can secure those and post back how I get on. I'll try to test it sometime this week just I'm a bit waring of changing the AVG settings because the only way to test if it was still working would be for a virus to be detected... and I' rather I didn't get viruses!