Windows 7 - Windows Defender

Asked By Feather

14-Nov-09 10:01 AM

Hi,

Can anyone help me?  I have Vista Home Premium 32 bit OS and am having
problems with Windows Defender shutting itself off without me doing
anything to it.  I have read things about Windows Live Care Safety
Scanner causing problems but this does not sort out my query as this
scanner does not work with my IE8 browser and so have not got it
installed.

Does anyone have ideas why my Windows Defender is shutting itself off?


--
Feather
Posted via http://www.vistaheads.com

14-Nov-09 04:20 PM

Howdy Feather,

Does Defender shut off after the system is running or when you first
start it up ?

Windows Defender will be shut off when an antivirus/security suite is
installed that contains an antispyware component; there is an issue with
Windows Management Instrumentation (WMI); or, the system is infected and
the malware turns it off.

To see if this is a WMI issue, open an Elevated Command Prompt
( Click the Start orb; in the Start Search field enter
cmd
Under Programs, *right* click cmd.exe and choose 'Run as administrator'
Enter the password and click Continue. If none is used, click Continue)

At the prompt type in the below exactly as written and then press Enter

winmgmt /verifyrepository

If this message appears " WMI repository is not consistent ", then type
in the below and press Enter

winmgmt /salvagerepository

You may have to run the above command more than once before you receive
a Success message.
To close the Command Prompt type in
exit
Press Enter
Restart the system.

If the message states that the WMI repository is consistent, then
there is *no need* to attempt to salvage it.


MowGreen
===============
*-343-*  FDNY
Never Forgotten
===============

banthecheck.com

16-Nov-09 01:26 PM

Hi MowGreen,

Thanks for the help.  I have done some further research and now believe
the problem lies with AVG 9.0 and the fact there is some incompatibility
problem with it and Windows Defender.    AVG 9.0 seems to switch
Defender off.  However, if I open and turn it on when I turn on my
computer then it seems to work fine.  It only switches off when I turn
my computer off.

Feather


--
Feather
Posted via http://www.vistaheads.com

16-Nov-09 04:59 PM

You're mowst welcome, Feather. Yes, AVG 9 contains
and it is shutting off Defender, which is what it is supposed to do.

Windows Defender is automatically turned off during installation
http://www.avg.com/us-en/faq.num-2672#faq_2672

Defender application will be automatically turned off.

Windows Defender is not removed from the computer, only disabled for the
time AVG is installed.

Please note that this is important to prevent conflicts between AVG and
Windows Defender. As they are both security applications, they will try
to check files you are working with. Since they will do that at the same
time, conflicts may arise. These can cause freezing, crashes or slowdown
of computer. It is generally not recommend to use more than one security
product on one computer. "

Actually, one can use more than one security product on the same
computer BUT only *one* of should be actively monitoring the system
(aka RealTime Protection).

So, if you want to manually update Defender so it can be used to *scan*
the system IF a malware issue arises, you can get it is latest definiton
file from here:
http://www.microsoft.com/security/portal/Definitions/ADL.aspx


HTH

MowGreen
===============
*-343-*  FDNY
Never Forgotten
===============

banthecheck.com