Microsoft Security Essentials is Microsoft's free anti-virus offering.It runs on Windows XP, Windows Vista and Windows 7, but not on Windows 8, which has a built-in AV component.

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Error activating Microsoft Security Essentials

I'm installing MSE on a XP Professional SP3 PC. After the initial install and update, an error pops up: Microsoft Security Essentials cannot start real-time protection This operation has been ...
3
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3answers
10k views

Disable MsMpSvc from command line

Quite simply I'm looking for a way to disable Microsoft's security essentials service from the command line, you used to be able to run the command (as admin) net stop MsMpSvc but that was somehow ...
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6answers
5k views

MSE updating fails, no warning or error message

I'm running Windows 7 Ultimate, 32-bit. For the last couple of days, MSE doesn't fails to update, remaining stuck at version 1.75.119 I presume that an error log is created somewhere, or an event ...
3
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1answer
349 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 ...
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9answers
2k views

Anti-virus for windows 7 home premium

Hi all I have a new laptop with Win 7 Home Premium. this machine came with already installed "MS Security Essentials" anti virus. I've installed on the laptop another protection "Symantec Endpoint ...
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2answers
1k views

Manually uninstall Microsoft Security Essentials (error 8007066F when uninstalling)

When trying to uninstall Microsoft Security Essentials on Windows Vista x86 via Programs and Features, I got an error message, code 8007066F, with no description. How can I remove Security Essentials?
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0answers
183 views

Microsoft Security Essentials Prevent PC From Sleep

Recently I had some problems getting my HTPC to sleep (S3), I noticed that sometimes it works and other times it doesn't. After some testing, I found out that once I disable Microsoft Security ...
2
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3answers
790 views

Are all of these antivirus programs really needed?

My English classroom has a lot of computers, all of which are very slow due to not being maintained and old, outdated software... or even software that is redundant. One of the computers has three ...
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0answers
52 views

How to interpret results from Microsoft Security Essentials command-line scan?

For about two weeks, Microsoft Security Essentials (MSE) hadn't completed a full scan, freezing most of the way through. Although this may be a known issue, I've been having some unexpected behavior, ...
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4answers
3k views

How do I allow programs that generate “high” or “severe” alerts in MS Security Essentials?

Microsoft Security Essentials seems to allow only quarantine or delete actions for program that it deems to have "high" or "severe" risk. However, it also assigns these levels to what it considers to ...
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5answers
6k views

How can I stop Microsoft Security Essentials launching on startup?

Microsoft Security Essentials automatically installed/ran itself during our last Windows update. How can I turn it off? I don't want to uninstall it. I don't want it to run during startup. I don't ...
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2answers
1k views

Microsoft Security Essentials quarantine location

Security Essentials has quarantined a file i need, it says it cannot restore it. Where does Security Essentials store its quarantined files? I have searched and cannot find its location. Windows ...
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1answer
122 views

Will the mandatory update policy in windows 10 bring security issues?

Disclaimer: This question originated the following one: Can the mandatory update policy in windows 10 generate momentum/oportunity risk?; With the purpose to divide one broad question in two specific ...
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2answers
4k views

Windows 7 hangs with 100% disk activity but only when online

I have the same problem as seemingly many other people here, and I think we might all be experiencing the same issue: a compatibility issue in Windows 7 between hard drive and network controller or ...
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1answer
42 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
833 views

MSE update KB2310138 causes system to hang

A particular system I've been looking at has been having intermittent hanging issues. The system seems to hang on start-up and is generally slow. I restored the system to a state previous to a Windows ...
11
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1answer
29k views

Is there a way to disable MsMpEng.exe from monitoring file access during parallel computing operations? [duplicate]

I am using Windows 7 and have a 4-core Intel CPU, and was recently running a 4-kernel parallel computation written in Wolfram Mathematica that accesses a directory on an external hard drive containing ...
5
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3answers
16k views

Microsoft Security Essentials does not turn on at startup

Of late, MSE has stopped starting the real time protection on its own. I see the red icon in the tray. I tried to start the real time protection myself but I get an error code: 0x800705b4. I had a ...
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0answers
17 views

Scan a single file using MSSE

I would like to be able to scan a single file using the command prompt on my Windows PC. I am using MSSE. The documents show that it supports the command line interface but, it would appear as if it ...
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1answer
328 views

How to delete security.config.cch?

I have this file in my profile on a windows7. It seems some type of a security policy config of a dotnet process. I want to make a copy from that and then delete it. But I can't do anything with him, ...
30
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2answers
27k views
0
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2answers
218 views

Microsoft Security Essentials expired

I use MS Security Essentials on my Windows 7 x64. I've been using it for years and since a few days now it does not update the definition files. I tried to do it manually, and I get the following ...
0
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1answer
473 views

Unable to reinstall MSE or Forefront Protection on Windows 7 x86_64

One of the administrators in our company has recently had a trojan (Upatre.A), they managed to detect this with Microsoft Security Essentials and it told us it was removed. She continued to report her ...
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0answers
81 views

Make Microsoft Security Essentials ignore items in shadow copy

On my computer are some programs that I have written and compiled, but MSE kept finding them and was always wanting to quarantine them, so I added my dev directory to the ignore list. That's fine. ...
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1answer
608 views

Force Uninstall Symantec Endpoint Protection 11?

Symantec Endpoint Protection 11 blue-screen-of-deathed my computer. I was unable remove S.E.P. (Symantec Endpoint Protection) while booted in safe mode so I simply disabled all related services, and ...
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0answers
63 views

How do I prevent Microsoft Security Essentials from warning me about recent scans?

I use my computer daily, and scan at the start of each month. Though perhaps it's foolish of me to do so, I am confident enough in my immediate recognition of my computers' behaviour, and the ...
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1answer
491 views

Unable to copy files previously extracted from archives created on a Mac, even after claiming ownership

I reinstalled Windows on my computer today, and backed up my music to a USB drive. Now, I'm trying to copy the files onto my fresh Windows partition, but I'm unable to copy files that I obtained ...
11
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1answer
41k views

How to disable/enable Microsoft Security Essentials from the command line?

I would like to know how to disable and enable Microsoft Security Essentials from the command line. This is a common procedure on build machines in order to speed-up the build process.
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3answers
78k views

Disable the Security Essentials End-of-Life Warning on Windows XP

Is it possible to disable the "Support for this operating system is ending" warning that the current version of Microsoft Security Essentials displays on Windows XP? Based on a quick couple of ...
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0answers
168 views

Prevent Security Essentials from creating a system restore point before definition update?

It is really annoying (and baffling) that Security Essentials always creates a system restore point before updating its definitions. There is no good reason to do this and creating a 2GB restore point ...
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1answer
634 views

Getting Microsoft Security Essentials to alert me when a threat has been found

Is there a way of getting Microsoft Security Essentials to alert me when a threat has been found? I recently went through the log tab of Windows Defender and found a number of threats in the ...
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2answers
2k views

Editing the Microsoft Security Essentials context-menu

As all MSE users would know, the context-menu item that it adds to Explorer is really long, with one whole sentence "Scan with Microsoft Security Essentials...". Is there a way to edit this and ...
9
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4answers
17k views

How does the performance of Microsoft Security Essentials compare with other Anti-virus products [closed]

Are there any solid data (i.e. benchmarks) comparing the performance of Windows Security Essentials with other anti-virus products? In particular, I'm interested in how much overhead it imposes on a ...
2
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0answers
37 views

In Microsoft Security Essentials how do you see the location of the detected threat?

MSE pops up saying the detected item, alert level, status and recommended action but doesn't say where the detected item is located. How do you find out? For example if it's in something I just ...
11
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4answers
61k 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
722 views

Windows 7 Can't uninstall Microsoft Security Essentials

to describe the problem as simple as possible, the company edition of Microsoft's Security Essentials called "System Center Endpoint Protection" is installed on my private computer and despite me ...
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0answers
53 views

In Security Essentials, how do I enable scanning of files previously restored from quarantine?

I had infected .htm files on a web server. I wanted to see the text of one of the files, so I could see the malicious code myself. However, whenever I would download one of the .htm files to my ...
3
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3answers
4k views

Microsoft Security Essentials Not Monitoring

When I boot into Windows Vista, Microsoft Security Essentials is set to run when the system starts. When I open the program, it says Microsoft Security Essentials isn't monitoring your computer ...
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6answers
9k views

How to keep Windows 7 from sleeping while scanning the PC

So, I've been using Microsoft Security Essentials lately. And it usually takes a couple hours or more for it to full scan my hard drive. Because of that, I commonly leave it scanning while I go do ...
3
votes
6answers
1k views

How did my computer get compromised?

How is it possible that my up to date install of Windows 7 with UAC enabled and Microsoft Security Essentials running became compromised, seemingly in a website drive-by? I've run ostensibly the same ...
3
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5answers
4k views

Does Microsoft Essentials work with AVG?

Do I have to get rid of AVG if I want to install Essentials on the new Windows 7 OS?
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1answer
277 views

Twin problems with Chrome and Microsoft Security Essentials

Woke up today and am getting this error from gmail: The webpage at https://accounts.google.com/ServiceLogin?service=mail&passive=true&rm=false&continue=https://mail.google.com/mail/u/...
3
votes
1answer
85 views

Security Essentials scheduled scan less often than weekly

Is it possible to schedule Microsoft Security Essentials to do a scan less often than once per week? This is not officially supported through the UI (it only offers day of the week selection), but is ...
0
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3answers
6k views

Why does Microsoft Security Centre show Virus Protection Disabled? Is it Important?

Microsoft security Essentials says my realtime virus protection is working, but the Microsoft security alerts says my virus protection is off. Which is correct and why do they contradict each other? ...
0
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3answers
6k views

Microsoft Security Essentials: How to Disable the 'Real Time Protection Is Off' Warning?

I decided to disable the "real time protection feature" of MSE. Now I have this little annoying "feature", that MSE keeps me informed that I have disabled "real time protection": the little red ...
11
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2answers
5k 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
0
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0answers
178 views

Why does context menu sporadically open behind taskbar?

Sometimes when I'm using Windows, it will go weird—when I try to change window using the taskbar it won't work but the taskbar will flash yellow. Windows will stay weird until I restart (or log off). ...
1
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1answer
2k views

Microsoft Security Essentials is not genuine now

I installed MSE on several machines months ago, and these are legit systems with legit keys. However, as of today MSE is complaining. Windows did not pass genuine validation. Security Essentials ...
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0answers
1k views

Security Essentials (SE) hangs while scanning ProgramData folder

First I did a complete scan on C:\ and kept getting (after about 1.5M files scanned, which is at the end of the C:\ProgramData folder or the beginning of the C:\Recovery folder) Then, after ...
8
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2answers
13k 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?