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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102 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 ...
2
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2answers
2k 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) ...
3
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0answers
997 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 ...
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1answer
254 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 ...
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0answers
71 views

MP Scheduled Scan starting very late, only during usage

In Windows 8.1, (and, I think, 8, 7, and Server going back to 2008) Windows Defender gets started daily by the MP Scheduled Scan task. It is by default set to run when the computer is not in use and ...
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1answer
512 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 ...
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0answers
98 views

Always ignore eicar test virus for Windows Defender on Win 8.1

I'm a developer and my software is able to scan processed files on demand with a configured virus scanner, if configured. To test this I have different copies of the eicar test virus in different ...
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1answer
4k 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
12k 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?
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2answers
431 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 ...
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1answer
5k 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 ...
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1answer
175 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 ...
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1answer
93 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?
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1answer
321 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 ...
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2answers
4k 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 ...
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2answers
1k 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 ...
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2answers
277 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 ...
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4answers
2k 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 ...
6
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4answers
30k 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 ...
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1answer
450 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
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1answer
2k 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 ...
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3answers
3k views

How can I run Windows Defender while running a second anti-virus in Windows 8?

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 8. Currently Windows 8 will close and disable Windows ...
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0answers
414 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 ...
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1answer
4k 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 ...
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5answers
3k 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 ...
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0answers
28 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 ...
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4answers
5k 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 ...
5
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1answer
2k views

How can I schedule scans in the Windows 8 Windows Defender?

In the previous Windows versions (XP, Vista and 7), Windows Defender included the option to schedule when Windows Defender scans your computer. However, Windows Defender on Windows 8 doesn't seem to ...
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5answers
6k views

No Microsoft Security Essentials for Windows 8. So, how to access similar Defender features/settings?

I just installed Windows 8 Pro. One of the first things I went to do is install Microsoft Security Essentials, thinking I still needed add-on security software, but I've learned here that it isn't ...
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4answers
67k views

Disabling Microsoft Antimalware service

I can't disable Microsoft Antimalware service (MsMpSvc/MsMpEng.exe). I tried using services.msc, but the startup type is grayed out and I can't change it to disabled nor stop the service. I also tried ...
12
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3answers
11k views

How to add the Windows defender into Windows Explorer's right click menu to scan a particular drive/folder/file on demand in Windows 8?

There is no option in Windows Explorer to scan a particular drive (or file) on demand by right clicking on it in Windows Explorer as we had in Windows 7 with Microsoft Security Essentials or like ...
7
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2answers
8k views

Windows Defender vs. Security Essentials in Windows 8

What is the difference between Windows Defender on Windows 8 and Microsoft Security Essentials? They practically look alike, so is there a need to install Security Essentials?
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3answers
3k views

How can you scan from the command line with Windows Defender?

I'm trying to run a Windows Defender scan from the command line. According to the article I found here I should be able to run the following: "C:\program files\windows defender\mpcmdrun.exe" -scan 0 ...
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0answers
45 views

Windows Defender Update KB915597 (Definition 1.135.415.0) > BSOD > Computer No Longer Starts [duplicate]

Possible Duplicate: A Windows Update Prevented Live Discs From Working? First off I'll state my system specs. Acer Aspire M1100 Windows Vista Home Basic 32bit OEM 2 Gigs of DDR2 ram ...
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2answers
2k views

Windows defender gives error message on windows startup

When I first start up windows, I get this error message every time: Application failed to initialize: 0x80070006. The handle is invalid. Anyone got any ideas what might be causing it, or ...
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1answer
7k views

How can I reinstall Windows Defender on my Windows 7 operating system

How do I reinstall Windows Defender to my Windows 7 Professional. It kept crashing, so I uninstalled it (And it DOES uninstall!) with the idea of reinstalling it. But when I try to reinstall, the ...
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2answers
115 views

Configure Windows Update more in-depth

On my Windows 7 system I have my Windows Update settings set to "Check for updates but let me choose whether to download and install them." I want this configuration but wish to make an exception for ...
3
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1answer
171 views

Windows Defender shows GUI at PC start up

I am running Windows 7 64 bit on my PC. For a few weeks now, when I boot up my PC, the Windows Defender interface displays and I have to close it with the x each time. Even if I disable Defender, I ...
0
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1answer
329 views

Windows Defender found “Backdoor.Win32/IRCbot.gen!M” what to do next?

The History of Windows-Defender on a vista home premium lists 3 times this software. The fist time "sucessfully" and two times "ignored". There is no button for any action, like remove, delete or ...
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4answers
4k views

How do you kill the Windows Defender “has been turned off” boot message?

Whenever I boot Windows 7, I get the message that says Windows Defender has been turned off (because of Security Essentials). I want Windows Defender off, and I want the message to go away. How do I ...
0
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3answers
2k views

Is Windows Defender “good enough”?

Out of habit I just downloaded Avira to my new WIn7 computer and during install it told me Windows Defender was present and running the two together may lead to problems. Which reminded me about ...
10
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2answers
4k views

Difference between Malicious Software Removal Tool, WinDefender, Security Essentials?

What is the difference between these three products? Malicious Software Removal Tool Windows Defender Microsoft Security Essentials
5
votes
4answers
5k views

Why is Windows Defender disabled?

OK, I have been doing nothing different than I have been since I have gotten Windows 7. Now all of the sudden Windows Defender is turned OFF and I cant turn it back on. It tells me that it is ...
15
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2answers
3k views

Automatic Windows Defender Updates with Manual Windows/Microsoft Updates

I've got Windows/Microsoft Update on my Windows 7 laptop set to notify me when updates are available but not to do anything automatically. I also have Windows Defender running and it seems to have ...
3
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2answers
5k views

How do I stop getting updates for Windows Malicious Software Removal Tool and Windows Defender?

I have disabled the service for Windows Defender and I have configured the Action Center to not monitor or notify me about Spyware and Unwanted software protection. Windows Updates however really ...
1
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1answer
395 views

windows defender sample submission

I recently installed Virtual Clone Drive to mount an Iso on my new Windows 7 64 bit install, and a minute later Windows Defender is asking me if it can submit a sample, which consists of the Virtual ...
15
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6answers
24k views

Uninstall Windows Defender in Windows 7

Can Windows Defender be permanently uninstalled/removed from my current Windows 7 installation, it can't be done through the Add/Remove Programs Wizard.
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3answers
3k views

Microsoft Defender vs AVG 9.0

From various forums it appears that AVG 9.0 disables Microsoft Defender. Is there any way to stop that behavior?
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1answer
4k views

MsMpEng.exe (Windows Defender?) uses a lot of CPU at startup and runs two instances on a single core machine

I'm using Windows XP Professional SP2 on a single core AMD64 processor, and I've got two instances of MsMpEng.exe starting up when I start up and log in. They use 64MB and 32MB of ram and 140MB and ...