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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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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 ...
3
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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
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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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1answer
119 views

Cannot turn on Windows Defender virus protection

Why can't I turn on Windows Defender virus protection? Today I noticed that my Windows Defender virus protection was off. I've been through countless blog entries, articles, and forums but I can't ...
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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 ...
1
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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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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 ...
0
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1answer
66 views

Windows Defender keeps taking action on nonexistent threats on nonexistent scans

I have a laptop (Dell Inspiron 3541) running Windows 10 v1803. Recently, I have been getting notifications from Windows Defender saying threats were found and removed on scnas that didn't happen. ...
0
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1answer
547 views

How to stop Windows Defender deleting false positives during file copy?

I have a hard drive with old versions of downloaded programs, some coding I did myself and a few other things that I would like to back-up. The last time I did this, I ended up with Windows Defender ...
0
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1answer
95 views

What traffic does Block(default) option block in Windows Firewall

I wanted to block all traffic, but from the device I remotely access the windows machine. I opened Advanced settings in Windows Defender and after a lot of trial and error with new rules, realised ...
0
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1answer
372 views

CPU usage way too high in Task Manager

One service is taking a LOT of CPU usage, and it doesn't cool down. This started when I enabled some Windows features (Application Guard, Guarded Host, etc), and turned on BitLocker on my main C: ...
0
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1answer
435 views

System slow/unresponsive when Thunderbird is receiving emails with Windows Defender

When Thunderbird is receiving emails I see a very high CPU usage from Windows Defender, to a point that it hangs and become unresponsive. If I turn off real time protection, it go back to normal. Also,...
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1answer
226 views

What does Microsoft Active Protection Service (formerly SpyNet) actually upload?

I would like to see an example of data that is uploaded by the "Cloud-delivered protection" (MAPS) in Windows Defender on Windows 10. What steps do i need to take on my Windows machine to review some ...
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1answer
413 views

Windows Defender made all my documents “corrupt and unreadable” (0x80070570)

I read some stuff online about cryptocurrency mining and wanted to give it a go, so I downloaded a miner which I know to be trustworthy called XMR-Stak. I downloaded it from the official GitHub page, ...
0
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1answer
699 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. ...
0
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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 ...
0
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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, ...
0
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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 ...
0
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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
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1answer
910 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 ...
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,...
2
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0answers
65 views

How to dismiss OneDrive notification in Windows Defender Security Centre?

For a few days now the icon for Windows Defender in the bottom right of my taskbar shows a yellow warning sign ⚠️ (which usually popped up when any problems were detected). When clicking on it, it ...
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0answers
206 views

How to add Microsoft Store App to Windows Defender Controlled Folder Access Whitelist

Is there a way to automatically whitelist all Mircosoft Store Apps without the need to mess with the access permissions of Program Files > WindowsApps folder? Of course you can add every single ....
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0answers
28 views

How can I confirm if/what Windows Defender is submitting to Microsoft through autosubmission?

I'm seeing large uploads taking place at night and am suspecting that it might be windows Defender submitting files. How can I confirm that?
2
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0answers
698 views

Why Windows Defender SmartScreen does not show publisher name of a signed executable?

I have purchased a Standard Code Signing certificate from Digicert and I do not understand why my executable, although signed with a certificate from a trusted CA is displayed as Unknown Publisher by ...
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0answers
243 views

Internet Explorer blocked by Defender Controlled Folder access - what is %desktopdirectory%\瘁毓翹?

I (accidently) launched Internet Explorer today and this triggered the following alert in Windows Defender (copy from the windows event log Microsoft-Windows-Windows Defender/Operational): C:\Program ...
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0answers
367 views

Restart Windows Defender on Windows 10 Home?

I would like to restart Windows Defender without rebooting my PC. Is this possible? I do not want to disable it permanently. I have tried the following methods: "End Process" on MsMpEng.exe from ...
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0answers
715 views

Windows Defender reports Fuerboos.C!cl threat inconsistently

I'm not sure of the appropriate forum for this question since it kind of sits between programming and general computer use, but I'll try here because it has nothing to do with code yet. I've been ...
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0answers
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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0answers
455 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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0answers
35 views

Windows 10 - Stopping Antimalware Service Executable Permanently

How do I stop the Malware Service Executable permanently in Windows 10 ? I tried: 1) Using Group Policies in Windows 10 - Turned it and off and Disabled it Status: Still Running when I search under ...
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0answers
23 views

Windows 10 Controlled folder access, when turned on does it prevent games from saving in documents?

Its a feature of windows 10 defender, but it doesn't explain itself well. When turned on, it takes you to a page where there is a list of folders its protecting like Documents and Pictures. They cant ...
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0answers
41 views

How to properly diagnose Windows 10 pro firewall not functioning

Ok, macOS / Linux native here on Windows territory and a bit lost. I'm helping a family friend upgrade to Windows 10. He has a company laptop that he was allowed to keep after his retirement. It had ...
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0answers
34 views

'unauthorized change blocked' for git commands or while developing with Unity

Every time I execute a git clone command, I got this warning from my Windows defender: unauthorized change blocked I'm using this command in PowerShell on a Windows 10 versie 1803 build 17134.165. ...
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0answers
15 views

Windows Defender, Bluetooth and Sticky Notes, all stopped working overnight. Plus blue screens

I've updated Windows. Every time blue screen appears I run the diagnosis that requires me to run the Windows Defender. And I can't access it through any method. Every time I click on any executable ...
0
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0answers
19 views

windows defender “device disabled”

I'm using windows 10 with symantec endpoint, in the last week the defender suddenly started to "pop up" with the alert that the device is disabled and that there are issues with the symantec EP. this ...
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0answers
38 views

what triggers windows defender to flag a download?

I'm trying to learn more about computers and often I have to download a file. I find what I consider is a trusted site- for example maybe someone mentioned it on a udemy course I'm taking. So often, ...
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0answers
474 views

Windows Defender last run result shows 0x2 - on Windows 10, Version 1709, OS Build 16299.192

Not sure why my Windows Defender Scheduled Scan showed 0x2 in the Last Run Result. Did not really bother to check the last run result as it has been running behind the scene nicely and quietly without ...
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0answers
73 views

Set up Windows Defender to automatically scan as needed?

Is there a way to set up Windows Defender (in Windows 10) so that it performs its periodical scans and updates in the background without prompting user or demanding that a window remain open on the ...
0
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0answers
88 views

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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0answers
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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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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0answers
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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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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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" ...
0
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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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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 ...
0
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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 ...
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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 ...
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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 ...