Windows Defender will not start or run

[Bquinn]

An interesting error occurred on my desktop with the Vista 64 bit during the
first part of December '07.

For the first time since Vista was loaded (about 1 October) I thought that I
would start Windows Defender and scan the computer. This would be the first
time in over two months. I got the following message:
-----------------------------------------
Windows Defender ---
Application failed to initialize: 0x800106ba. A problem caused this
program's service to stop. To start the service, restart your computer or
search Help and Support for how to start a service manually.
-----------------------------------------
So I rebooted. Got the same message. So I went to the various places on
the internet trying to find a solution to start Defender. None have worked
so far. There were a lot of threads on XP, but I only found one on Vista.

I even uninstalled MS Update <KB931099>, which was suppose to be a complete
new Win Defender install and then reinstalled it again (with a reboot in
between). No soap either with this change. Everything works OK on the
desktop so I have gave up to find a solution at that time.

I checked my laptop (Vista 32 bit) and defender works as it should. I could
always go back to the repair of Vista on the desktop and I might do that
sometime in the future. Any help or comments would be appreciated.

Thanks!

Bquinn

 

[Robinb]

are you running Microsoft OneCare?
If so, windows defender is turned off in One Care because One Care has its
one built in WD.
Some people had a problem after the last MS update.
I personally do not use OneCare because of all its problems.
robin

 

[Bquinn]

No Robin I am not running MS One Care.

Thanks for the information.

Bquinn

 

[Robinb]

try going to the WD newsgroup (I belong there too)
there are a great bunch of people who might be able to answer this better

you can do it via the web here

http://www.microsoft.com/athome/security/spyware/software/newsgroups/default.mspx


To view these newsgroups with Outlook Express or another NNTP newsreader,
you might be required to log on using the following information:
.. Server: privatenews.microsoft.com
.. Account name: privatenews\spyware
.. Password: spyware (case-sensitive)

pick microsoft.private.security.spyware.general

robin

 

[mhenry]

I have the same issues with my system. Did you ever get an answer to the
error issue?

 

[Bquinn]

No answers yet nor have I found a solution. I am not going to reinstall the
Vista since everything else works and works well.

Bquinn

 

[What4]

Don't know whether this will help you or not, but I have a post open on
similar lines see post "Win Defender non start?"

For some reason, don't ask me why, but my defender is now starting 8 times
out of 10 (I'm logging it) after I re-checked some of the option boxes, see
my post. On the non start occasions, I am manually starting with no issues. I
still don't understand why though the security centre is not giving warnings.
Be interested to know if this helps you though!

 

[Tom McC]

An interesting error occurred on my desktop with the Vista 64 bit during the
first part of December '07.

For the first time since Vista was loaded (about 1 October) I thought that I
would start Windows Defender and scan the computer. This would be the first
time in over two months. I got the following message:
-----------------------------------------
Windows Defender ---
Application failed to initialize: 0x800106ba. A problem caused this
program's service to stop. To start the service, restart your computer or
search Help and Support for how to start a service manually.
-----------------------------------------
So I rebooted. Got the same message. So I went to the various places on
the internet trying to find a solution to start Defender. None have worked
so far. There were a lot of threads on XP, but I only found one on Vista.

I even uninstalled MS Update <KB931099>, which was suppose to be a complete
new Win Defender install and then reinstalled it again (with a reboot in
between). No soap either with this change. Everything works OK on the
desktop so I have gave up to find a solution at that time.

I checked my laptop (Vista 32 bit) and defender works as it should. I could
always go back to the repair of Vista on the desktop and I might do that
sometime in the future. Any help or comments would be appreciated.

Thanks!

Bquinn

 

[Tom McC]

I had same problem. Fixed by going to control pannel-administrative tools -
services - select Windows Defender-right click for properties-choose startup
options and select automatic. Restart and no problems since.