Defender automatically turned off.

[GAP]

When I try to open defender, I get a message saying that it's been turned
off. Why? What can I do to correct this? I've deleted my old version and
downloaded the newest version already, but that didn't help.

 

[Bill Sanderson]

Usually this is because you are running an antimalware product or suite
which provides the functionality of Windows Defender. Recent versions of
some AVG, McAfee, Symantec/Norton products, and Microsoft Security
Essentials will all have this effect.

 

[Ǝиçεl]

Hello GAP


Please always state what OS you're & service pack

Any others Security programs running in the background ?

http://support.microsoft.com/kb/555375
-=-

 

[Tom Emmelot]

Hi Bill,

Trend Micro with anti spyware does this since the beginning of Windows
Defender!
I use Defender for a scan some times and then just start Defender from
the Configuration window, after click on Defender i click on Start
Defender and Defender gets his update and i can scan after that i stop
the Windows Defender Service in Services and disable it again.
This in Windows 7 Ultimate 64Bit, but i did this also in XP and Vista
the same way!

Kind Regards and all the best in 2010,

*< TOM >*<

Bill Sanderson schreef:

 

[GAP]

I'm running Windows with xp2. I have Avg Free anti-virus, Spyware blaster,
and Pavark antirookit. Does that help? I'm kinda new at this.

 

[Bill Sanderson]

AVG's recent products will turn off Windows Defender--this is
expected--nothing to worry about.

 

[CB]

I get the exact same problem running Windows 7 Home Premium Edition with
Windows Defender v6.1.7600.16385.

Each time I start Windows, Windows Defender has stopped running. I also run
Ad-Aware Free edition, Spy-bot and AVG Free edition.

The thing that really enoys me is that when running, the Windows Defender
icon is no longer displayed in the Windows System Tray. Therefore it is not
immediately obvious that Defender has stopped.

There used to be a check box in Windows Defender to display icon in system
tray. It seems to have been removed.

Anyone any thoughts?

Thanks.

 

[Bill Sanderson]

Have you read the other messages in the thread to which you replied?

AVG turns off Windows Defender in its most recent version.

 

[Ǝиçεl]

Hello CB,

Did you notice the slider button for scrolling the window at the right
side of your Defender Options Window? Scroll down.

Under Real-time protection options, the las two radio buttons
-=-

Go here: Microsoft Malware Protection Center
<http://www.microsoft.com/security/portal/default.aspx>

Save it, close all windows/progÑams open, and run as admin.

Click the link in the right frame under ' Latest Definition Updates '
for either the x86 [32 bit] or x64 [64 bit] edition of Windows installed.
*Save* the definitions that will now download.

Once the download completes close all open programs and browseÑs.

Now run the downloaded file [ if the edition of Windows is Vista, then
*Ñight* click it and choose 'Run as administrator'.
Follow the prompts to allow it to run ].

See if that both brings you up to date, and perhaps improves on the behavior
in future.


Ǝиgel

 

[rograg]

I have similar problems with Defender
I'm running Vista Home Premium with SP2 and AVG Free 9.0.725 updated daily
on a CompakCQ60 laptop. No other antispy or security except Windows Firewall.
Problems only started 2/3 months ago when I noticed Defender was not always
starting, and if it did it turns off almost immediately without notifying me.
I can turn it on again and it will then stay operational until I shutdown.
I tried the manual update which installed todays definitions OK but after
shutting down and restarting Defender had failed to start at all.
idonthavealltheanswers

 

[Bill Sanderson]

Current versions of AVG and other security suites intentionally disable
Windows Defender. This is expected behavior, and in accordance with
Microsoft's recommendations--nothing to worry about.

 

[Phil]

I have been following this thread because I have the exact same problem.
Defender is in my Start-up and does start - but turns off after a short time.

Vista 64 Home Premium completely up to date, and AVG Free edition.

Whatever the cause is, it cannot be OS dependent, because there are posts
here from XP, Vista and Win7 users.

 

[nmchick]

I am running xp pro. I keep setting defender to automatic in services and
starting it, but every time I reboot and check it, says disabled. something
is making it disable itself. why doesn't microsoft address this issue since
it's happening on so many operating systems? i have mcafee security suite
and malwarebytes and they both show as clean, although i did have an
infection from rogue.mightymaxpc that i eliminated. I actually discovered
this problem when windows installer quit working; i cannot install a new hp
printer.

 

[Dave M]

Because McAfee has already addressed this issue here:

http://service.mcafee.com/faqdocument.aspx?id=TS100610