Windows Defender and Norton 360

[Jaina]

Hi,

I recently downloaded Windows Defender version 1.1.1593.0. I have Norton 360
version 3.8.0.41 installed with all patches and updates, etc., applied. When
I look in the Norton Security log, it says Norton is blocking a file named
msmpeng.exe, which I think is part of Windows Defender. The error says that
this .exe is trying to open or access one of Norton's components ("open
process token"), MCIU32.exe. I added msmpeng.exe to Norton's firewall and
scan exclusion lists, but the error still persists. When I called Norton
support, they told me to uninstall Windows Defender, which I would rather not
do. Can anyone offer a solution?

Regards,

Jaina

 

[Ǝиçεl]

Hello Jaina,

Un-install Windows Defender, re-install your Norton.

My recent installation of NIS 2010 made if VERY clear that Norton would
not install "correctly" with "other security products" in place. That means
Windows Defender and other real-time proactive security applications. If
you then want to re-install Defender afterwards, that's up to you, not
Symantec.

NOTE I did re-installed it, although I shut down Norton completely
while I was re-installing and I did that while offline. Norton and
Defender now work just fine together for me.

 

[Jaina]

Hi,

Thanks for writing back.

I guess I wasn't clear. I have a clean install of Norton that's been running
fine for years. I get automatic updates, so my Norton is very current. I
installed Windows Defender long after my Norton install. What versions of
Norton and Windows Defender are you using?

 

[Ǝиçεl]

NIS 2010 version: 17.7.0.12

Windows Defender Version: 1.1.1600.0
Engine Version: 1.1.5902.0
Definition Version: 1.85.1476.0

 

[GFar]

NIS 2010 version: 17.7.0.12

Windows Defender Version: 1.1.1600.0
Engine Version: 1.1.5902.0
Definition Version: 1.85.1476.0