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Windows 7: can't install or turn Microsoft Security Essentials

27 Oct 2016   #1
imeem

Win 7 & 10 x64
 
 
can't install or turn Microsoft Security Essentials

I had Avast installed and I uninstall it as I wanted to use MSE again. When i try to activate it, I get error 0x8007002. When i try to install it again, I get 0x8004FF91.

Any ideas on how to fix this?




Attached Images
can't install or turn Microsoft Security Essentials-mse.png can't install or turn Microsoft Security Essentials-mse-2.png 
My System SpecsSystem Spec
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27 Oct 2016   #2
oscer1

win 7 64 bit
 
 

hi when you removed avast did you use the removal tool? Avast Uninstall Utility | Download aswClear for Avast Removal
My System SpecsSystem Spec
27 Oct 2016   #3
imeem

Win 7 & 10 x64
 
 

Quote   Quote: Originally Posted by oscer1 View Post
hi when you removed avast did you use the removal tool? Avast Uninstall Utility | Download aswClear for Avast Removal
Nope, but i tried running them several times now. I also tried deleting the Microsoft Security client folder in Program Files and running the installer again, but i am still getting the same errors.
My System SpecsSystem Spec
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27 Oct 2016   #4
oscer1

win 7 64 bit
 
 

I do not know what you mean by "i tried running them several times" do you mean the avast removal tool? see if this thread helps you at all. microsoft security essentials installation error code:0x8004FF91 - Microsoft Community
My System SpecsSystem Spec
4 Weeks Ago   #5
imeem

Win 7 & 10 x64
 
 

yes. thanks for your help. For now i'm going to try installing another anitvirus until I have time to get back to this MSE mess.
My System SpecsSystem Spec
4 Weeks Ago   #6
Seffrid

Windows 7 Home Premium 64
 
 

It doesn't sound like it's MSE that is the mess, rather that you haven't completely uninstalled Avast. It might be worth reinstalling Avast and then uninstalling it using the proper removal tool.
My System SpecsSystem Spec
4 Weeks Ago   #7
Barman58

Windows 10 Pro x64 x2 Windows 10 Enterprise x64, Ubuntu
 
 

My System SpecsSystem Spec
4 Weeks Ago   #8
ThrashZone

Win-7-Pro64bit 7-H-Prem-64bit
 
 

Hi,
Right click the removal tool and select run as administrator
Do the same for the mse installer after using this
http://support.microsoft.com/en-us/kb/2483120
My System SpecsSystem Spec
1 Week Ago   #9
imeem

Win 7 & 10 x64
 
 

Quote   Quote: Originally Posted by Seffrid View Post
It doesn't sound like it's MSE that is the mess, rather that you haven't completely uninstalled Avast. It might be worth reinstalling Avast and then uninstalling it using the proper removal tool.
just tried that now. I get the exact same error as my second screen shot. Do u think Malwarebyte Free is causing this even tho it is not running?
My System SpecsSystem Spec
1 Week Ago   #10
torchwood

W7 home premium 32bit/W7HP 64bit/w10 tp insider ring
 
 

Hi Emeem,
Malwarebytes free DOES NOT affect either MSE or Avast.

run SFC /SCANNOW
copy/paste the results


Roy
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 can't install or turn Microsoft Security Essentials




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