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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.

64
votes
7answers
224k views

Disabling Microsoft Antimalware service

I can't disable the Microsoft Antimalware service (MsMpSvc/MsMpEng.exe). I tried using services.msc, but the Startup Type drop-down is grayed out and I can't change it to Disabled nor stop the service....
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 ...
23
votes
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 ...
16
votes
2answers
4k 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 ...
15
votes
6answers
26k 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.
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) ...
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 ...
12
votes
3answers
12k 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 ...
11
votes
2answers
6k 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
10
votes
3answers
16k 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 ...
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 ...
9
votes
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 ...
8
votes
2answers
14k 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?
8
votes
1answer
8k views

How can you turn Core Isolation Memory Integrity back off again in Windows 10 build 17127 and later

In Windows 10 Insider Preview builds, in Windows Defender Security Center, after the Fall Creators Update, Windows Insiders will see a new feature Core Isolation. It's possible to turn the Memory ...
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 ...
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 ...
7
votes
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 ...
7
votes
1answer
2k views

How to read the entire “Unauthorized changes blocked” message?

From time to time, Windows Defender (via Controlled Access Folder) blocks apps from accessing my files and raises a notification on the Windows notification bar. The notification looks like the ...
7
votes
3answers
16k 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 ...
6
votes
5answers
7k 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 ...
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 ...
6
votes
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 ...
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 ...
5
votes
5answers
11k 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 ...
5
votes
2answers
2k views

How to monitor Windows Defender real time protection?

I love how Microsoft made third party anti virus protection obsolete with Defender - it just works. Unfortunately for me as a developer this sometimes means it works a bit too well, and slows down ...
5
votes
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 ...
5
votes
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 ...
5
votes
1answer
3k 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 ...
5
votes
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 ...
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 ...
4
votes
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?
4
votes
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?
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 ...
4
votes
1answer
2k views

How can I get the full Windows 10 Notification messages (they are truncated)

Notifications in Windows 10 truncate reasonably important data. For instance, Defender is telling me a program is changing my folder, but it wont give the full message (path to exe): Now, this I can ...
4
votes
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 ...
4
votes
3answers
240 views

How to exclude scheduled task from Windows Defender?

I have scheduled task that should run every two hours, with the following command line action: Program: mshta Arguments: vbscript:Execute("CreateObject(""Wscript.Shell"").Run ""powershell -NoLogo -...
4
votes
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 ...
4
votes
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 ...
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 ...
4
votes
2answers
633 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 ...
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,...
3
votes
5answers
11k 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 ...
3
votes
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 ...
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 ...
3
votes
1answer
670 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 ...
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 ...
3
votes
1answer
209 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 ...
3
votes
1answer
580 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 ......
3
votes
1answer
1k views

Disable Defender but keep Windows Firewall active in Win10

In the latest Windows update (1803) it seems that the Windows Firewall is now part of Windows Defender. Windows Defender is questionable and MsMpEng.exe continuously eats resources - I disabled ...
3
votes
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 ...