Stack Exchange Network

Stack Exchange network consists of 174 Q&A communities including Stack Overflow, the largest, most trusted online community for developers to learn, share their knowledge, and build their careers.

Visit Stack Exchange

Questions tagged [windows-defender]

In Windows 8 and later versions of Windows, 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.

0
votes
1answer
5k 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, ...
2
votes
2answers
2k views

How do I completely turn off Windows Defender in Windows 10?

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 Protection off is just a temporary ...
4
votes
2answers
1k 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 ...
1
vote
1answer
5k 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 ...
2
votes
2answers
2k 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 to ...
0
votes
0answers
143 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 ...
8
votes
2answers
37k 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 ...
0
votes
0answers
390 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 ...
4
votes
2answers
632 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 ...
1
vote
0answers
125 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's real-time protection, as it causes too much overhead. As a pro-user, I know what I download and I haven't caught a virus ...
27
votes
5answers
47k views

How to turn off Windows Defender permanently

Windows Defender keeps blocking a third-party program that I know isn't a threat. All my attempts to disable Windows Defender have failed. I've tried to: Go in the Windows Defender option and ...
1
vote
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?
5
votes
1answer
2k 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 ...
-2
votes
3answers
1k 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'...
3
votes
1answer
578 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 ......
0
votes
1answer
5k 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
votes
2answers
871 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 ...
0
votes
2answers
945 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 ...
0
votes
0answers
1k 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
votes
1answer
50 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
246 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
119 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 ...
10
votes
1answer
335 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 ...
3
votes
1answer
11k 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 ...
1
vote
1answer
2k 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
906 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 ...
13
votes
4answers
122k 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
votes
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,...
0
votes
1answer
2k 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
4answers
51k 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 ...
1
vote
3answers
20k 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
2k 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
23k 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 ...
0
votes
1answer
361 views

Windows defender thread using 100% CPU

The problem is the following - a thread of windows defender hangs and consumes 100% of one core (viewed with process explorer). It happens only when there is InPrivate IE instance running. The result ...
2
votes
1answer
205 views

How can I hide Windows Defender alerts on Windows 8?

Is it possible to disable the visual alerts of Windows Defender on Windows 8 but still leave the program activated? If so, how?
1
vote
1answer
864 views

add windows defender service exception for internet radio

I'm streaming internet radio from here: http://www.protonradio.com/player/live/player.php and windows defender service is running pretty hard inspecting the stream as it comes in. I trust the stream,...
4
votes
3answers
24k views

Change Windows Defender Settings Via Registry - Windows 8

I would like to change some Windows Defender settings via the registry, after a clean install of Windows 8, now I know of the DisableAntiSpyware registry value, but I would appreciate if someone could ...
-1
votes
2answers
3k views

Uninstall Pre-installed Norton Internet Security, And Enable Windows Defender? [closed]

I recently purchased a Windows 8 computer, and Norton Internet Security came preloaded as a trial-ware. Now that the trial is finished, I want to enable Windows defender, and delete Norton Internet ...
2
votes
3answers
3k views

What format when excluding processes from Windows Defender?

I find the Windows Defender 'Excluded processes' window confusing. This is the screen I am referring to: I would expect just to enter the name of a process, e.g., devenv.exe, but the Browse button ...
8
votes
5answers
7k views

Scheduling silent hourly Windows Defender definition updates using Task Scheduler on Windows 8

I want to update Windows Defender's definitions every hour and came up with the idea of using the Task Scheduler to execute the Defender update service with the signature update argument. ~/Windows ...
12
votes
4answers
80k views

How do I install Windows Defender/MSE on Server 2012?

On earlier versions of Windows client and server you could install Microsoft Security Essentials, free antivirus from Microsoft. In Windows 8 client, it is integrated into Windows Defender. However, I ...
3
votes
1answer
669 views

'Canonical' way to block websites in Windows 8 without using hosts

In Windows 8, Microsoft has (rightly) decided that Windows Defender will prevent modifications from being made to the %WINDOWS%/System32/Drivers/etc/hosts file. This is an attempt to prevent trojans ...
0
votes
1answer
4k views

Do I need another anti-virus other than Defender? [duplicate]

Possible Duplicate: Does Windows 8 require any sort of Virus protection? Jut got new laptop with win8 - the question is if I need some extra AV than windows 8 defender? On my PC with win7 I use ...
1
vote
4answers
5k views

How can I run Windows Defender while running a second anti-virus in Windows?

I want to run a Windows Defender scan while running an antivirus scan. In my case I am using Trend Micro OfficeScan Antivirus with Windows. Currently Windows will close and disable Windows defender ...
1
vote
0answers
454 views

Windows 8 Action Centre Keeps Reminding Me To Turn Virus Protection On

I have not installed any anti-virus software on my Windows 8 as I think that Windows Defender is enough to keep my system protected from any virus attack. However, sometimes my Action Center shows to ...
3
votes
1answer
5k views

How to edit hosts file in Windows 8? Defender says malware detected

I've tried editing it in the same way as in Windows 7. E.g. opening Notepad/Notepad++ as Administrator and then opening the file and save it. Right after saving it Windows Defender will say Malware ...
5
votes
5answers
6k views

Does Windows Defender update if Windows Update is set to manual?

It looks like the Windows Defender in Windows 8 won't upgrade the signatures automatically, if Windows Update is set to "Notify, but don't install the upgrades". Is my impression real? Is there is a ...
0
votes
0answers
29 views

How do I virus scan an individual file under Windows 8? [duplicate]

Possible Duplicate: How to add the Windows defender into Windows Explorer’s right click menu to scan a particular drive/folder/file on demand? From what I understand, Windows 8's version of ...
6
votes
4answers
13k views

Windows Defender high CPU when idle

I noticed on my MacBook Pro from 2011 with Windows 8 that the fans start spinning when I leave my laptop idle for a while. I figured that it is Windows Defender which seems to be running. Is it ...