Windows Defender Using 100 Of CPU?

Sep 13, 2015

I can't access any of the windows defender user interface in W10. The process is taking everything and make my computer run very slow.

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Similar Messages:


Cannot Turn On Windows Defender

Jan 23, 2016

I have a new Dell Computer with Windows 10. I have deleted McAfee with its on Uninstaller and also with another uninstaller.  I have no other antimalware programs running.  I have tried a number of ways to start Windows Defender, which is the only antimalware program listed in my Security area.  I have tried to start it with Services.  I get an error message as shown below. I get this error message: "The Windows Defender Service service on Local Computer started and then stopped.  Some services stop automatically if they are not in use by other services or programs."  I have removed all other antimalware programs and no longer get McAfee popups. 

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Antivirus :: How To Reinstate Windows Defender

Dec 5, 2015

How can I reinstate Windows Defender,which is now closed down,by removing McAvee security even though the icon is missing.

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Antivirus :: Windows Defender Won't Update

Oct 24, 2015

Defender on my main machine wont update saying a network problem yet my other machine on the same network is up to date, see pic.

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Antivirus :: Windows Defender Cannot Be Turned Off

Jan 13, 2016

As I use a proprietary antirvirus, and on a whim, I just thought to check my Windows Defender setting, only to find to find that it was turned on*. (I could swear I turned it off, sometime in the past. I was further surprised to find that the On/Off button is disabled--so I CAN'T turn it off!

I'm further surprised to find the notice, under Settings/Windows Defender, which says "You can turn this off temporarily, but if we find that it is turned off for a while we'll turn it back on again, automatically." (One mystery solved*)

As I understand it, Windows Defender is merely Microsoft's own notion of free antivirus software--so when Windows turns Defender on again, this means I not only have two antivirus packages running (and possibly interfering with each other--involuntarily) but also that I now seem to have no choice in the matter--unless, of course, I permanently uninstall the antivirus software that I paid good money for.

Questions: How do I re-enable the Windows Defender On/Off button; and How do I DISable Windows ability to turn it on again?

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Windows Defender Is Turned Off And Can't Turn It On

Jan 14, 2016

I'm logged on, it's my computer, I'm the administrator, there are no AV running. However I get the system error " Windows Defender is being managed by your system administrator" controlled by group policy.  All I want to do is turn it on. Local Group Policy shows nothing is configured...??

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Antivirus :: Can Schedule Scans With Windows Defender?

Aug 13, 2015

There does not seem to be a way to schedule an automatic daily scan with Windows Defender. I got a action center notification to run a Defender scan. Is that something I can expect regularly? Having to do a regular manual scan will be difficult.

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Antivirus :: Right Click Scan In Windows Defender?

Aug 3, 2015

I believe it's called adding it to the context menu.. I saw a registry hack for Windows 8 but i'm not sure how to do it in Windows 10.. I got used to using MSE in Windows 7 so now i'm lost not being able to right click a file to scan it immediately.. how to enable this in W10 Defender?

or should I just dump Defender totally for another Free antivirus? I was using Avast for awhile but MSE was less heavy on the resources so I went with that..

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Antivirus :: Windows Defender Definitions Out Of Date

Jan 14, 2016

but I did a manual update just now and did not get any error message and windows update says it is up to date nevertheless, WD reports it is out of date. but it shows green bar at top.

and after a restart, when I go to WD settings it says that cloud and sample submission is off. This is despite the fact that I turned it on.

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Antivirus :: Windows Defender Keeps Asking To Complete A Scan?

Dec 19, 2015

I run a scan but as soon as I have rebooted and within an hour or so it asks me again? I receive the notification in the taskbar and Windows Defender turns orange and states I am unprotected. So far I have completed 3 clean scans today but after a reboot it is as if it does not remember that I have run a scan. I am running the latest Windows 10 pro.

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Antivirus :: Permanently Disable Windows Defender?

May 4, 2015

I'm on build 10074 of Windows 10 and cannot find a way to permanently disable Windows Defender. When I go to Control Panel > Windows Defender > Settings, it brings up the new Windows 10 System Settings app which gives an option to turn "Real-time protection" off. However, the description on that states:

Real-tim protection find and stop malware form installing or running on your PC. You can turn it off temporarily, but if it's off for a while, we'll turn it back on automatically.

After about 15 minutes, it turns itself back on. How can I disable this permanently?

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Antivirus :: Update Turning Windows Defender Off?

Nov 29, 2015

So, earlier today (after having been gone for the last week on a trip) I installed a update for my Windows 10 computer. After the update (and it seemed like a doosy) the system worked fine for about 5-10 minutes and so I set about doing the usual disk cleanup. During this though Windows Defender turned itself off. Attempts to open the program either result in a window that just reads that the app is 'turned off' and isn't monitoring the computer.

Following the tabs on the 'action center' pull out seem to open up the Defender tab properly and allows me to turn it on...but then it turns itself off again after a couple of seconds.

I'm not currently running any other kind of virus scan/spyware protection software on the machine atm. Aside from just installing new anti-virus software.

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Security :: Windows Defender Not Working - No Other AV Installed?

Dec 15, 2015

I have not installed any AV SW (that I know of) but my windows defender stopped working and says there is another AV running. How can I find out what is causing this and get defender back online? I have the windows home edition. 

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Antivirus :: Turning On Windows Defender To Do A Scan

Jan 15, 2016

I'm presently using (running) Avast Pro and Malwarebytes Anti-Exploit-Free, with weekly running of CCleaner, Malwarebytes Anti-Malware, and AdwCleaner. I do a lot of browsing and haven't had any problems with this approach. However, I got the hankering to also keep Windows Defender up-to-date and to occasionally run its scan just to see see if anything comes up.

So, I go to WD with the expectation that it is turned off and find that it may not be. I would go to update&security>windows defender and find, to my surprise, that real-time protection and cloud based protection are turned on, but grayed out. Furthermore, when scrolling to the bottom of the screen and clicking Open Windows Defender, I get the message that "WD is turned off and not monitoring the computer." I then went to Brink's WD tutorial (Windows Defender - Turn On or Off in Windows 10 - Windows 10 Forums)

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Windows Defender - App Has Been Turned Off And Isn't Monitoring Your Computer

Aug 26, 2015

I have another AV installed.

How do I get rid of the Windows Defender message:

"This app has been turned off and isn't monitoring your computer"

It appears after every reboot.

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How To Scan Removable Devices Using Windows Defender

Aug 11, 2015

I am unable to scan pendrive using defender in windows 10

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Upgraded Using SpyBot - Switching On Windows Defender

Aug 24, 2015

I upgraded to Windows 10 and use SpyBot. I have noticed I have no antivirus and get warned to switch on Windows Defender.

I am checking Security and Maintenance and the option to Turn On Windows Defender is present. Clicking it does nothing.

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How To Completely Remove / Disable Windows Defender

Sep 11, 2015

I'm rather having much trouble with the standard virus scanner. I am not a fan of them, they block files and create errors.

Now, I have windows defender and every time I restart my pc it turns it self on, after disabling it. How to get rid of this?

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Windows Defender Enough For PC Protection Or Need To Install Antivirus

Sep 11, 2015

I am currently using Windows 10 Pro 64 Bit. Is Windows Defender enough for my PC protection, or would I have to install any other one? I regularly take all the upgrades Microsoft provide me for the PC.

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Antivirus :: Remove Windows Firewall / Defender From ISO Image?

Jan 3, 2016

Is it possible to remove Windows Firewall+Defender from Windows 10 ISO image? Installing Windows 10 without FW+DEF?

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Antivirus :: Windows Defender Disabled And Is Unable To Start

Feb 10, 2016

The windows defender in my pc is disabled and isn't starting up. It just shows that the app is turned off and isnt monitoring your system. The windows security center is also disabled. I tried manually enabling it from the services app and it got enabled but it gets disabled after sometimes itself.

I have tried booting into safe mode to enable the defender but no luck. i alos dont have any other AV instaleed on my pc that might be clashing with my defender. I also did an integrity check using /sfc code in command prompt and it returned no errors.

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Antivirus :: Windows Defender Scan Type Index

Jan 5, 2016

I found out how to see the event logs for Windows Defender scans from a thread on eightforums ("Windows Defender - where are the Scan Results?"). I just ran a full scan, but Windows Defender apparently ran a quick scan afterwards, so there is no confirmation on the WD user interface that the full scan completed. So following the advice in that other thread, I looked at the WD log in the Event Viewer. I see in the Operational listing two events with Event ID 1000, which seems to correspond to a scan starting, and two with Event ID 1001, which corresponds to a scan finishing (see below). The two 1000 events and the two 1001 events differ from each other in the "Scan Type Index" visible in the Details view of each event, which is "1" for one pair of 1000 and 1001 and "2" for the other. The times are consistent with the 1000/1001 pair for Scan Type Index 2 being the full scan and the pair with Scan Type Index 1 being the subsequent quick scan. Am I correct that Scan Type Index 1 is a quick scan and Scan Type Index 2 is a full scan? Is there some place where the various event type codes, etc are described?

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Antivirus :: Can't Turn On Windows Defender And Cannot Open Update

Dec 19, 2015

I am having trouble with Windows Defender and Update. I am getting error 0x800705b4 for Defender and though I've searched online on how to fix the problem none of them seem to work. Also, my computer won't let me access the update & security portion of my settings. When I click on it the window closes immediately.

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Antivirus :: Bitdefender And Windows Defender Both Active At The Same Time

Oct 7, 2015

I have Win 10 Pro x64. I recently upgraded from Bitdefender Internet Security 2015 to Bitdefender Total Security 2016. With both versions, I notice that whether booting cold or a restart, sometimes Windows Defender is active (can be accessed thru the Control Panel icon and updates itself etc) and other times it is inactive "The application is turned off and is not monitoring your computer". Same thing with the Windows Firewall.

Is this a known 'bug', maybe with Windows Defender or Bitdefender, that allows Windows Defender to enable itself, seemingly randomly when starting/restarting the PC. My understanding is that the 3rd party AV should permanently override and disable Win Defender.

I presume that this is not a good thing and conflicts between the two will result in problems/instability.

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Updates :: 0x80070643 Error When Updating Windows Defender

Sep 22, 2015

Have had this error for a couple days now. Tried regular checks to verify system components and online image and windows update service diagnostics, cleaned up SoftwareDistribution, turned off non-Microsoft auto starting services, - all to no avail.

Also, ran netfxsetupverifier, which gave me the only error - aspnet.mof missing, which I presume is OK.

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Antivirus :: How To Enable Windows Defender Adware Blocking

Dec 1, 2015

Microsoft now allows Windows Defender to detect PUAs

Microsoft has recently added a new adware protection system for enterprises, allowing them to detect and block Potentially Unwanted Applications (also known as PUAs) on their computers.

But according to Microsoft own announcement, this feature was only available for enterprises, so consumers running Windows 10 Home or Pro, for example, aren't getting it.

And yet, there's a very simple way to enable this feature on any computer with Windows Defender, and as gHacks notes, it all comes down to just a few registry tweaks.

Before anything, make sure you create a backup or a system restore point, just in case something goes wrong and you need to recover your Windows install.

Read more: [URL]....

SOURCE: Shields up on potentially unwanted applications in your enterprise - Microsoft Malware Protection Center - Site Home - TechNet Blogs

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