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Can't get defender to start


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#1 floydfan

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Posted 27 July 2016 - 10:43 AM

Sorry if this is in the wrong section.

 

I have a laptop that came with Win10, with a subscription to McAfee. I can't remember at this point if it was unactivated or expired.

I removed the McAfee program via the uninstall programs feature in the control panel, then tried to start Defender but it wouldn't start.

Then went to the McAfee website and used their removal tool, Defender still won't start.

Tried the Start option in the Services window. No luck. 

Tried to enable defender with the command prompt. No luck.  BAH  Still says 'This app has been turned off and isn't monitoring your computer'.

 

Any ideas?


Edited by Orange Blossom, 27 July 2016 - 10:54 AM.
Moved from Windows 10 to more appropriate forum. ~ OB


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#2 DefaultGateway

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Posted 27 July 2016 - 11:17 AM

There is a program called "Security Check".

Click HERE to Download Security Check.

After downloading, run the program "SecurityCheck.exe".

You'll get a User Account Control (UAC) Notification, this is a built-in Security Technology since Windows Vista.

This UAC Notification wants you to confirm that you really want to run this program, click ​Yes to confirm that you want to run this program.

 

A new small window with a black background will open.

In this window, press any key to let the program run.

This program "SecurityCheck.exe" will scan your PC for Installed Security Programs.

When done, there is a log created by this program.

Post the log in your Next Post.



#3 floydfan

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Posted 27 July 2016 - 11:25 AM

okay....thanks for your hints!!!   as i was waiting for replies i kept hacking away at the problem, and found that by entering a DWORD into the registry worked. 

 

 

I found the tip at   https://windowsinstructed.com/windows-defender-does-start-windows/


Edited by floydfan, 27 July 2016 - 11:28 AM.


#4 floydfan

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Posted 27 July 2016 - 11:30 AM

sorry for the problem with the link. i'm having trouble with copy and paste into the forum.



#5 floydfan

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Posted 27 July 2016 - 11:33 AM

https://windowsinstructed.com/windows-defender-does-start-windows/


Here's what I found:


Perhaps Windows Defender is disabled though the registry or the key is simply missing. We should check this.
1.Press the Windows and R key at the same time. This will open a Run window.
2.In the Run dialog type regedit and then hit enter or Run
3.In Registry Editor navigate to HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows Defender. By unfolding each folder step by step.
4.Check if there is a DWORD DisableAntiSpyware

If there is no DWORD DisableAntiSpyware then right-click an empty location and choose New -> DWORD, enter DisableAntiSpyware and click on Create. Then double-click DisableAntiSpyware and set the value to 0. If there is a DWORD DisableAntiSpyware then check if the value is set to 0 if not set the value to 0.

#6 DefaultGateway

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Posted 27 July 2016 - 11:41 AM

So you can open Windows Defender?



#7 floydfan

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Posted 27 July 2016 - 11:45 AM

I can go to the program files, open the defender folder, double click on the defender application icon, the program opens and I was able to turn it on. It is now showing real-time protection on. :)
Sound okay? Let me know if I am missing anything.

#8 DefaultGateway

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Posted 27 July 2016 - 11:52 AM

Windows Defender has three possible colours.

 

Red = Real-Time Protection DISABLED

Yellow = Real-Time Protection ENABLED, but the Malware Signatures are NOT updated for a while and/or the Last Malware Scan has been a while.

Green = Real-Time Protection ENABLED

 

I assume your Windows Defender has the colour "Green".



#9 floydfan

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Posted 27 July 2016 - 11:55 AM

It showed green, and I am attempting a quick scan right now to make sure all is well.

#10 floydfan

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Posted 27 July 2016 - 11:57 AM

Done, and green.

#11 DefaultGateway

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Posted 27 July 2016 - 11:58 AM

I assume Windows Defender didn't find anything, in that case, do you have any other questions?



#12 floydfan

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Posted 27 July 2016 - 12:03 PM

No questions at this time... yay! If only all computer problems were this simple. Thanks for your help!

#13 DefaultGateway

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Posted 27 July 2016 - 01:07 PM

You're Welcome! :wink:



#14 quietman7

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Posted 27 July 2016 - 01:50 PM

The inability to turn on Windows Defender 8/10 is typically the result of having a third-party anti-virus installed or failure to remove it properly (completely). Since Windows 8/10 Defender includes anti-virus protection, it is disabled during the installation of another anti-virus program. If a trial anti-virus (i.e. McAfee, Norton, etc) came preinstalled on your computer or you installed one, Windows Defender will be turned off (disabled). Windows Defender recognizes the install and automatically disables itself when other anti-virus products are used to avoid conflicts. Windows Defender will remain disabled until that anti-virus software has been completely uninstalled. In some cases, you may need to download and run the anti-virus vendor's clean up tool to remove any remaining remnants.

After removal of the third party anti-virus, Windows 8/10 Defender needs to be activated if you choose to use it. When uninstalling the third-party anti-virus Defender should automatically turn itself on but sometimes you may receive a message indicating your system has no protection...click here to turn on Windows Defender. If not, and Defender remains disabled, you will need to manually turn it on and then check to make sure the Windows Defender service is started.

Sometimes it may take a couple of computer reboots after performing the above steps to ensure Windows Defender is up and running properly.
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#15 floydfan

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Posted 09 August 2016 - 08:45 AM

thanks for your help, laptop is still functioning properly.




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