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.
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.
After doing the second upgrade for Windows 10 on one of my machines, when clicking on Windows 10, it says it cannot open. Everything else is working fine. there is no other antivirus program on this computer and it worked fine prior to the original upgrade to windows 10
Defender won't update its virus definition file. It tries, and the green bar gets almost to the end then stops. After quite a while, the update fails with an error message saying that the update failed. This has been going on for a week or two!
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?
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.
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..
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.
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?
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)
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.
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.
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.
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?
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.
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...??
plugged in USB thumb drive opened windows explorer right clicked drive scan with windows defender and it said scanning pc but it never shows any options so I dont know if it scanned pc or usb for sure why or not
I've attempted to turn off my windows defender via group policy editing, however; following the guide here on the forums (how to turn off defender) there is simply no folder/tree with windows defender in the group policy editor.
I have w10 pro and am able to successfully start gpedit.msc.
Why its missing? I really dislike the regedit way of disabling/enabling; and thus wish to use gpedit...