In Windows 8, Windows Defender is a built in antivirus software product that replaces Microsoft Security Essentials. Before Windows 8, Windows Defender featured antispyware capabilities and was not offering antivirus protection.

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17 views

On Win7 do I need WinDefender's scan when I have NOD32?

I have NOD32 Antivirus which provides realtime virus protection and also, I think, does scheduled full-system checks now and then. But the stock 'flag' icon (I don't know what it's called) in my ...
2
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1answer
131 views

Temporarily Stop All Microsoft Windows Defender Processes In Windows 10

I'm running a huge sync job and Microsoft Windows Defender is hogging a ton of memory and creating a lot of disk I/O requests on my drive as well. I know how to disable Windows Defender but I do ...
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0answers
25 views

Windows defender asks me to scan every day

Since I passed under Windows 10, my antivirus Windows defender wonder every day to scan my PC. Why? Especially that he finds nothing as virus... You too? Build : Windows 10 Pro maintained and ...
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1answer
41 views

How to disable (signature-based) real-time scanning and leave behavior monitoring enabled in Windows Defender?

I believe that Windows Defender included in Windows 10 implements some forms of protection other than signature-based threat detection. Two Group Policy settings indicates this: "Turn on behavior ...
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1answer
68 views

Effect of “windows defender is taking action to clean detected malware”

Sometimes I get this message, but when I look at the history of windows defender, I see nothing. I am scared that windows is mistaking something important for a malware and deleting it without me ...
3
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3answers
148 views

How do I turn off Windows Defender from the command line?

I am searching for a command to temporarily turn off Windows Defender. Any suggestions?
0
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1answer
155 views

Manually exclude drive letter in windows defender

Is there a way to manually exclude a drive from Windows Defender in Windows 10? I know how to do it with the control panel. But the problem is that this requires the drive to be plugged in, but if I ...
4
votes
2answers
583 views

Remove Microsoft Bloatware ( OneDrive, Defender, Games, Ads, etc ) from Windows 10?

I simply want to get rid of all non critical Microsoft programs from Windows 10. They've made it incredibly difficult to permanently kill Defender and One Drive. Even after they are removed, you'll ...
2
votes
1answer
185 views

How can I disable Windows Defender using the command line? [duplicate]

I am looking for a way to disable Windows Defender on Windows 8/8.1/10 using the command line. Everything I've found so far has involved using a GUI at some point, and this isn't useful for a process ...
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0answers
73 views

Antimalware Service Executable - Windows Defender Service - Large Network Usage

Antimalware Service / Windows Defender Service is using a large amount of network resources quite often on my machine. I am trying to first pinpoint WHY this is happening, before I move forward with ...
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0answers
32 views

Windows Defender - Is it possible to receive an email alert when something malicious is detected?

In Windows Defender, Windows 7 through 10, is it possible to receive an email alert when something bad is detected? If not directly through the software, I wonder if an event log parser may do the ...
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0answers
60 views

How to prevent Windows Defender from restarting automatically in Windows 10?

Windows 10 only allows to turn off the Windows Defender temporarily. Is there a way to revert this back to the old manual behavior? I don't want to disable it completely, I just don't like the ...
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0answers
19 views

Disabling Windows Defender when talking to a given IP

I'm working on complex web application that has a number of behat tests and in the process in running them on a windows 10 vm (specifically the edge test machine as provided by Microsoft via https://...
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1answer
4k views

The action can't be completed because the file is open in Windows Defender Service

I was trying to move a file from my Downloads folder to another folder, but I received the following message: The action can't be completed because the file is open in Windows Defender Service I ...
0
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1answer
1k views

How can I set up Windows Defender in Windows 10 to scan removable devices like in Windows 8.1?

I used to set up Windows Defender up to Windows 8.1 to automatically scan the removable devices (like USB drives) when inserted, like explained here. I can't find the same options in Windows 10, ...
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votes
2answers
451 views

How to turn off windows defender in Windows 10 completely?

As discussed here, Windows Defender seems to be the cause that make File Explorer become very slow to use. So I want to turn it off completely - using Real-time Proctection off is just a temporary ...
4
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2answers
188 views

How to quickly enable/disable windows 10 (defender) antivirus?

I would like to be able to quickly enable/disable windows defender antivirus. If you type 'Defender' in the search box (aka Cortana) you will see see a 'Windows Defender settings' item. How can I get ...
0
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1answer
858 views

How can I do an Automatic Shut Down after a Windows Defender Virus Scan? Would the Task Scheduler be involved?

I was wondering how I could possibly have my computer automatically shut itself down when Windows Defender is done doing a virus scan. I usually do it at night because I have a Slow CPU and a lot of ...
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0answers
122 views

Copying text files causes massive disk load

When I copy text files from one partition to another on the same disk (which is a brand new WD Blue), it takes 10-20 seconds, even, if the size of the file is 120 KB. I suspect that my Microsoft ...
1
vote
2answers
554 views

After removing AVG 2015 Windows Defender will not start

System: Windows Pro 8.1 After removal of AVG 2015, Windows Defender fails to start. When attempting to start Windows Defender via the UI It fails to start with error 0x8007139f When attempting ...
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0answers
48 views

set Windows Defender protection in manual mode in Windows 10

I would like to set the Windows Defender protection service in manual mode (NOT disabled completely) so that: when Windows starts it is disabled i can run custom scans with MpCmdRun.exe i can ...
4
votes
2answers
15k views

Windows defender has 100% disk activity in Windows 10

My computer is running Windows 10. I have kept Windows defender on as it was light weight and just worked in past versions of Windows. However, in Windows 10.. I find that for about 5-10 minutes of ...
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0answers
159 views

Error message: Library not registered: 0x8002801d

I am using Windows 7 and have both AVG and Windows Defender running. Wanted to change the time for the automatic scan but when I went to save got the error message: Library not registered: ...
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0answers
188 views

Interaction between Windows Application Experience and Windows Defender leading to 100% disk active time

This has been driving me up the wall for some time, but I think I may have finally caught (one of) the instigator(s) in the act. Solutions already tried with no effect: I have run chkdsk I do ...
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2answers
255 views

Scan a network folder in Windows Defender (Windows 8.1) via command line?

In Windows 8.1, we can instruct Windows Defender to perform a custom scan, via command line, like this: MpCmdRun -Scan -ScanType 3 -File "D:\My Personal Docs" Can the same be done with network ...
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0answers
94 views

Windows 10: Turning off Windows Defender's Real-Time protection [duplicate]

Since the times of Windows 7 I'm used to turning off Windows Defender real-time protection, as it causes too much overhead. As a pro-user, I know what I download and I havn't caught a virus since the ...
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5answers
10k views

How to turn off Windows Defender permanently

Windows Defender keeps blocking and a thrid party software that I know isn't a treat. All my attempts to disable Windows Defender have failed. I've tried to : Go in the Windows Defender option and ...
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2answers
9k views

Windows 10 update - kaspersky internet security installation

I just got windows 10 update. This update seems to have removed my kaspersky internet security installation. Am I good to install it back as I am unable to remove windows defender?
3
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1answer
339 views

Windows Defender: Disable real time; keep scheduled and on demand scanning

I just upgraded to Win 10 (RTM build). I have disabled the built in AV's (Defender) real time protection because I do not run it, never did and have never gotten a virus (and I've had a computer for ...
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votes
3answers
296 views

Windows defender isn't working

My Windows defender was turned off because of preinstalled antivirus. Then the antivirus expired and I want to turn it back on but I can't. Getting a message: "Your PC isn't monitoring because the app'...
0
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1answer
181 views

Uninstalling VS2012 hangs on system restore point

I am trying to uninstall VS2012 on my dev VM and have tried the following so far: -Turned off Windows Defender completely -Disabled restore point creation in System Settings -Used the cmd prompt ......
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1answer
3k views

Failiure to update Windows defender virus & spyware definition - 0x8024402c

An error with error code 0x8024402c is thrown each time while trying to update Windows Defender's virus & spyware definition. Checked the following for diagnosis, and found no problem with these;...
2
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2answers
151 views

Stop Windows Defender deleting a legit VB script

I have wrote a little script that will automate downloading and running a program, however when invoking the script from command line, Windows Defender will enter the scene warning user that malware ...
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1answer
251 views

Windows Defender Service keeps stopping

Windows defender service keeps stopping all the time. After enabling it, it only runs for a couple of seconds but then stops automatically. I don't know what's the reason but I suspect malware ...
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0answers
457 views

Windows Defender Resource Usage / Code Integrity Warnings

So, for some context, I'm a little paranoid because a few days ago, I let a friend put together her PowerPoint presentation on my Windows 8.1 Pro N laptop, and when I had looked away for a moment, she ...
0
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1answer
42 views

Certain downloaded files take minutes to become usable

I'm on Windows 8.1 Pro, but this problem also happens on my W7 Premium computer. I sometimes download files but am unable to use them for 2-3 minutes after they've been downloaded. It happens ...
0
votes
1answer
206 views

Can Microsoft Anti-Virus really be disabled in Windows 8.1?

I have disabled all "Windows protector" anti virus features, at least as far as Microsoft will admit to me when I use the Action Center tray icon to disable it. However I still see MsMpEng.exe ...
1
vote
1answer
104 views

How do Malware like Coupon drop down land up in the Windows System without a trace in the Control Panel

I have the Windows Bit Defender updated and run Complete System scans biweekly. All the drivers and the operating System are up to date. In spite of this the Coupon drop down malware landed on my ...
7
votes
1answer
89 views

Windows Defender Waking Up Hard Drive

I have an external hard drive that I only use for storage, I almost never write data to it but it can be useful if I want to access some data that I have in it. When it’s possibile I’d like for the ...
0
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1answer
2k views

safe to delete windows defender scan and definition updates folders? Windows 7,8,8.1

It looks like WD keeps a history of all scans and keep older definition files. Is it ok to delete the content of these two folder and let WD rebuild their content. Anyway to disable WD to keep ...
0
votes
1answer
762 views

Recurring event in Event Log: “Windows Security Center Service could not stop Windows Defender”

I have recently set up a new development machine (Lenovo T440p laptop with Windows 8.1 Pro), and this event keeps getting logged to the Event Log (about once every 2.5 minutes): The Windows Security ...
0
votes
1answer
376 views

Can't Turn on Windows Defender - Error code 8050800d

My friend using an HP pavilion G, running Win7 64 bit version. Recently had to restore to factory defaults, due to unstable operating environment. Reinstalled all updates, to date. Using Windows ...
7
votes
4answers
66k views

Is it okay to run Windows Defender and another antivirus program at the same time?

We all know that it isn't recommended to run more than one antivirus program at a time. But since Windows Defender comes with Windows, is it safe to have it and another antivirus program (AVG, Avast) ...
4
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0answers
2k views

Windows 8 MsMpEng.exe high disk usage, uninstalled Defender, and now AvastSvc.exe

I recently disabled Windows Defender due to MsMpEng.exe randomly spiking up my computer's disk usage. I saw it from Task Manager->Details->I/O read and write bytes. The read bytes go as high as 12,000,...
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votes
1answer
1k views

Allow Windows Defender to update automatically but not Windows [duplicate]

Windows 8. (Not Windows 8.1) I have Windows Update set to check for updates but not install them automatically. I get nearly daily notifications from Windows Update to install Defender updates. Can I ...
0
votes
1answer
7k views

How can I fix Windows Defender error code in Windows 8.1?

Windows Defender is giving me an error code 0x80073b01 and it will not start. I am not sure if this is caused by the OS language change that I did recently but I did a scan for virsuses with Norton ...
2
votes
3answers
19k views

Windows Defender — 100% Disk Usage

I have recently upgraded my laptop from Windows 7 to Windows 8, and now 8.1. After the upgrade I observed a very high disk usage periodically (almost every day), caused by some weird ...
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3answers
19k views

Do I need Norton Internet Security if my Windows 8 machine has Windows Defender? [closed]

I got a new Windows 8 laptop. It comes with Norton Internet Security pre-installed. Do I need this if Windows 8 comes with Windows Defender? Can I safely uninstall Norton Internet Security?
2
votes
3answers
1k views

BSOD when running Windows Defender

I have recently installed Windows Phone 8 SDK on my Windows 8 Pro 64bit machine and I've been getting blue screen of death ever since. They show up every time my computer starts to be idle. The error ...
2
votes
1answer
10k views

Install Windows Defender on Windows Server 2012 [duplicate]

I've been trying to install the Microsoft anti-virus but Microsoft Security Essentials does not work and I can't find Defender to install. From what I know you CAN NOT use Microsoft Security ...