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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.

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Files Excluded by Defender. Are these files safe and can be excluded?

When doing a scan of my laptop using Windows Defender on latest version of Windows 10, I notice there are few files are excluded by Windows Defender. You can view the image here: Are these files safe ...
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318 views

Potentially harmful software detected in windows 10

I have a program (a so-called 'packed program') which is continually falsely flagged as harmful software by windows 10. I have allowed this software in windows defender, and added an exception for the ...
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2answers
1k views

Suppress “Windows Defender Antivirus did not find any threats…” notification on Windows 10

Every once in a while the little nofication balloon icon in my system tray is highlighted, which tells me something needs my attention. When I open the "Action Center", I just get a message saying ...
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2answers
3k views

Error while opening the Windows Defender in Windows Server 2016

I installed a fresh server 2016 STD and joined to Domain. and logged in with domain administrator user. I got the error below when I opened Windows Defender from Settings. The error says it doesn't ...
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1answer
698 views

Windows Defender: Saving settings shows error: “No such interface supported”

Windows Defender can no longer save settings. It's stuck at scanning all the time, the entire drive, and when the smallest file is downloaded. This is a slow-down in Visual Studio, Google Chrome etc. ...
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0answers
15 views

windows defender 32bit does not stop working [duplicate]

I have windows 10 pro 64bit on my HP pavilion15 laptop. recently some minutes after system boots up, windows defender user interface 32bit starts working and takes more than 30% of CPU and does not ...
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1answer
2k views

CMD.exe arguments vs. Task Scheduler arguments (MpCmdRun.exe)

In Windows 10 Task Scheduler, under Task Scheduler Library > Microsoft > Windows > Windows Defender there is a Windows Defender Scheduled Scan Task. If you double-click on this Task, it ...
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1answer
788 views

Remove “Scan with Windows Defender” from the Explorer context menu in Windows 10 Creators Update

I have recently upgraded my windows 10 Pro to the build 1703 aka "Creators Update". How can I remove the "Scan with Windows Defender" item from the Explorer context menu? It seems, old recipes like ...
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2answers
1k views

Windows Defender Security Center

after the creator update I have an annoying problem regarding the windows defender security center and the relative notification. I have some files that defender marks as trojan / virus, they are ...
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0answers
56 views

Why is Windows finding malware in a sparsebundle?

I'm copying over a sparsebundle containing some Time Machine backups from my mac onto my Windows machine's drive. While copying, Windows Defender starts complaining about a threat called Exploit:Win32/...
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1answer
576 views

How to turn Defender back on after using O&O ShutUp

How to turn Windows Defender back on, after disabling it in O&O Shut Up 10? I switched it back in OOSU but it still doesn't work. I also tried using different tutorials, but usually nothing ...
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1answer
791 views

Windows Defender Security Center warning icon

I have APC Back-UPS CS 500 connected by USB to my Windows 10 desktop computer. In power config I have set 'Sleep' option to 'Never' setting for RDP access as described here: http://windows.microsoft....
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1answer
572 views

How to turn off the Windows Defender notification-icon in Windows OS Build 10.0.15063?

Tried the group policy, tried the direct registry setting, tried the notification-settings - nothing works anymore. Does anyone know the magic trick to turn off the Windows Defender notification-icon? ...
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4answers
17k views

Windows 10 Creators Update - Ignore specific “performance & health” recommendations?

Since the recent "Creators Update," I have this icon my system tray: Turns out it's because I have my laptop set to never sleep while plugged in. How can I set it to not "warn" me about this ...
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1answer
277 views

avast disappear and doesn't re-install/uninstall/repair [duplicate]

It happened this morning: Avast Antivirus Free just disappeared from tray icon ?! I checked the installation directories, and everything is in there, but the antivirus didn't started. I tried to ...
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1answer
53 views

How do I check if WinDefender *has fixed* my PC? [duplicate]

Ok, this is a bit of a twisty story. Soon after I bought my new Win10 laptop I started having PC freezes (nothing on the screen moves, incl. mouse) that in 4-30min resolved by themselves. I went back ...
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129 views

Setting windows defender regardless of group policy on Windows 10

I'm interested to know whether there is theoretically any way for someone with local administrator access to a computer connected to a domain to disable or enable Windows Defender regardless of what ...
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1answer
570 views

Exclude backups (Volume Shadow Copy) from Windows Defender

Recently I setup a backup for some folders. Today I found out that windows defender won't let the backup service do its job. But how do I exclude the backup's shadow copy from windows defender? It's ...
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2k views

Why windows defender consumes a lot of my computer's memory?

My PC is running slow because of Windows Defender's Anti-Malware Service. What should I do? I have already disabled REAL TIME protection.
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1answer
183 views

How can I get rid of “Trojan:Win32/Manrele.G!cl”? [duplicate]

Windows Defender pops up every 30 seconds or so and says it has removed malware called "Trojan:Win32/Manrele.G!cl". Obviously it's missing something, or this wouldn't keep happening. I'm running ...
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1answer
359 views

weekly burst of smbd process_usershare_file errors: from where?

For the past few weeks, every Monday morning between about 6:30 and 7:45, in a burst lasting less than a second, my Ubuntu 14.04.5 LTS fileserver logs a spate of errors from smbd. ../source3/param/...
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2answers
107 views

If there is no WinDefender icon in the systray, do I have realtime virus protection?

When I run Windows Defender from the start menu, the window that appears says "Real time protection: On". And a WinDefender icon appears in the systray. But this icon was not there before I ran ...
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1answer
1k views

If Windows Defender is “off” should MsMpEng even be running?

Note: system is Windows 7 Lately my computer's been grinding to a halt for a couple minutes at a time throughout the day for no apparent reason and with no obvious pattern. All I could see in the ...
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1answer
5k views

(Urgent) Windows 10 reboot stuck at “Preparing Windows” with Defender trying to remove “virus”

Windows defender found a file I downloaded as a Trojan. It was Spursint.something. It said I need to reboot to remove it, so I clicked on "Reboot now". Before actually shutting down, a screen appeared ...
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2answers
3k views

How do I turn off notifications from Windows Defender in Windows 10?

For some reason Windows Defender keeps popping up notifications (with sound) that became a great disturbance to me. Completely disabling it would be a possible solution, but is there a way to just ...
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2answers
1k views

virus still dangerous when in windows defender quarantine

So I've checked my computer and I've found an old trojan file in the quarantine-tab of windows defender. It is there since two months. So my question is: If the file is in the quarantine, is it still ...
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0answers
96 views

usb stick pretends to be empty after worm

I plugged my USB stick in an infected PC(did not know that at first) and then back to my PC. When I plugged it in my PC, Windows-Defender poped up and showed a serious warning: Worm:Win32/Gamarue....
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1answer
1k views

Should I disable Windows defender when using Avast?

I have windows defender, Avast internet security and MWB, Windows 10, latest update. Usually Avast automatically disables windows defender, which is expected. But starting from yesterday, defender ...
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0answers
29 views

No ALerts - WIndows Defender After

How do I get Windows Defender notifications to return after a W8.1 reinstall? I recently reinstalled Windows 8.1 (64). Before, Windows Defender regularly would produce pop-up notices with a "bing" ...
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0answers
100 views

Windows Defender Service Failing to Start

I've searched for so many hours for a solution to this problem but haven't found a working answer. The errors I get are 0x800705b4 and 0x80070005 I recently deleted some old system files from an ...
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1answer
344 views

Cannot disable windows defender

Running Windows 10 x86-64. I have installed Avira antivirus and want to completly diable windows defender. In the control panel's security and maintnence page, I am informed that both are turned on, ...
4
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1answer
322 views

How does Windows Defender know that an antivirus has been installed?

My computer got infected by a virus (one that Windows Defender did not detect) last week. I ran a Norton Bootable Rescue CD I had made and that cleared out the virus for good. However, when I went to ...
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1answer
2k views

How to find specifics of what Defender detected in real time protection?

Windows Defender very quickly popped up a notification saying it has taken action to prevent against malware. I need to know the details. This happened while I was downloading pictures from Google ...
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3answers
3k views

Does an Excluded Directory in Windows 10 Defender Also Include the Sub Directories?

I know how to exclude a file or folder (directory) from Windows Defender in Windows 10. What I'm not sure about is whether this exclusion applies to all sub directories within that directory? It ...
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1answer
1k views

High disk and CPU usage on startup of windows 10 Antimalware Service Executable

It's been a few days that when I boot into windows 10, there is an high usage of the disk and the cpu. My machine has a ssd on is installed windows 10 (anniversary update), and an hdd where I save ...
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2answers
893 views

Removed a virus, W10 Cloud Protection & Automatic Sample submission disabled by group policy

The cause So, I did a stupid and executed an infected exe. Immediately my PC started acting up, all sorts of applications were installing, ads were popping up, you name it. I quickly started a ...
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1answer
64 views

Should I uninstall my antivirus after the windows update?

It seems that windows updated its antivirus with the anniversary update. I still have avast and malwarebytes installed. Should I uninstall any of these? I only have free versions of both
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2answers
3k views

How do you disable and remove the Windows Defender service permanently - kills battery life and performance running? [duplicate]

I am running the latest updates of Windows, and I want to remove all anti-virus based protection on my laptop for battery savings. I've tried going into PC Settings and Windows Defender, but it keeps ...
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1answer
101 views

How can I use windows defender? And should I?

I've heard that windows defender is pretty good but microsoft is forced to turn it off. I just uninstalled avira. However, I still cannot turn on windows defender If I open windows defender I simply ...
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1answer
35 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 ...
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1answer
17k 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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1answer
509 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
1k 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 ...
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3answers
30k 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?
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1answer
3k 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 ...
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2answers
8k 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 ...
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1answer
19k 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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1answer
4k 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
369 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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3answers
9k 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 ...