Windows Defender fails to initialize - error 0x800106ba

I just started getting this error (under Vista Home Premium SP1, up to
date).

I Googled and tried a few things such as 'net start windefend' at an
elevated command prompt. (That command also works fine at Run.) That opens
the program and it runs just fine, but when I reboot, I receive that same
message - something like - Windows Defender failed to initialze 0x800106ba.
I am told to reboot and check Help or something like that.

I tried to remove it under Control Panel \ Programs and Features but it's
not listed. If I could have uninstalled it, I would have tried a fresh
install but that seems not to be possible.

Ideas? Suggestions? (I also looked for a Defender forum in
news.microsoft.com, but there isn't one. I thought it OK to post here.)

Thanks, Dave Horne

More info - If I uninstall McAfee Security Center 9.3, this problem goes
away. Since the items protected by Defender are already covered by McAfee,
is there a way to either uninstall it or turn it permanently off?

Thanks, DH


"Dave Horne" <> wrote in message
news:...
>I just started getting this error (under Vista Home Premium SP1, up to
> date).
>
> I Googled and tried a few things such as 'net start windefend' at an
> elevated command prompt. (That command also works fine at Run.) That
> opens
> the program and it runs just fine, but when I reboot, I receive that same
> message - something like - Windows Defender failed to initialze
> 0x800106ba.
> I am told to reboot and check Help or something like that.
>
> I tried to remove it under Control Panel \ Programs and Features but it's
> not listed. If I could have uninstalled it, I would have tried a fresh
> install but that seems not to be possible.
>
> Ideas? Suggestions? (I also looked for a Defender forum in
> news.microsoft.com, but there isn't one. I thought it OK to post here.)
>
> Thanks, Dave Horne
>

Dave Horne wrote:
> I just started getting this error (under Vista Home Premium SP1, up to
> date).
>
> I Googled and tried a few things such as 'net start windefend' at an
> elevated command prompt. (That command also works fine at Run.) That
> opens
> the program and it runs just fine, but when I reboot, I receive that same
> message - something like - Windows Defender failed to initialze 0x800106ba.
> I am told to reboot and check Help or something like that.
>
> I tried to remove it under Control Panel \ Programs and Features but it's
> not listed. If I could have uninstalled it, I would have tried a fresh
> install but that seems not to be possible.
>
> Ideas? Suggestions? (I also looked for a Defender forum in
> news.microsoft.com, but there isn't one. I thought it OK to post here.)
>
>
Rollback, do a restore point back to a point before the problem started
happening, that's if you have restore points active.

Or you might try this.

http://support.microsoft.com/kb/929833

Dave Horne;965488 Wrote:
> More info - If I uninstall McAfee Security Center 9.3, this problem goe
> away. Since the items protected by Defender are already covered b
> McAfee
> is there a way to either uninstall it or turn it permanently off
>
> Thanks, D
>
>
> "Dave Horne" <davehorne@xxxxxx> wrote in messag
> news:OrExn6KjJHA.1184@xxxxxx> > >
> > >I just started getting this error (under Vista Home Premium SP1, up t
> > > date)
> >
> > > I Googled and tried a few things such as 'net start windefend' at a
> > > elevated command prompt. (That command also works fine at Run.) Tha
> > > open
> > > the program and it runs just fine, but when I reboot, I receive tha
> > sam
> > > message - something like - Windows Defender failed to initialz
> > > 0x800106ba
> > > I am told to reboot and check Help or something like that
> >
> > > I tried to remove it under Control Panel \ Programs and Features bu
> > it'
> > > not listed. If I could have uninstalled it, I would have tried
> > fres
> > > install but that seems not to be possible
> >
> > > Ideas? Suggestions? (I also looked for a Defender forum i
> > > news.microsoft.com, but there isn't one. I thought it OK to pos
> > here.
> >
> > > Thanks, Dave Horn
> > > > >

You will not be able to use windows defender when you have mcafe
installed. like other anti-virus softwares, mcafee will disable window
firewall and defender to avoid duplicate notifications.

uninstalling and reinstalling mcafee would fix this issue (it woul
reconfigure). but in your case you can uncheck windows defender fro
startup items (msconfig) 'Article
(http://support.microsoft.com/kb/929135) and set windows defende
service to Manual and stop the service

--
prasathkuma

Thank

Prasath S

"prasathkumar" <> wrote in message
news:...
>
> Dave Horne;965488 Wrote:
>> More info - If I uninstall McAfee Security Center 9.3, this problem goes
>> away. Since the items protected by Defender are already covered by
>> McAfee,
>> is there a way to either uninstall it or turn it permanently off?
>>
>> Thanks, DH
>>
>>
>> "Dave Horne" <davehorne@xxxxxx> wrote in message
>> news:OrExn6KjJHA.1184@xxxxxx> > >
>> > >I just started getting this error (under Vista Home Premium SP1, up to
>> > > date).
>> > >
>> > > I Googled and tried a few things such as 'net start windefend' at an
>> > > elevated command prompt. (That command also works fine at Run.) That
>> > > opens
>> > > the program and it runs just fine, but when I reboot, I receive that
>> > same
>> > > message - something like - Windows Defender failed to initialze
>> > > 0x800106ba.
>> > > I am told to reboot and check Help or something like that.
>> > >
>> > > I tried to remove it under Control Panel \ Programs and Features but
>> > it's
>> > > not listed. If I could have uninstalled it, I would have tried a
>> > fresh
>> > > install but that seems not to be possible.
>> > >
>> > > Ideas? Suggestions? (I also looked for a Defender forum in
>> > > news.microsoft.com, but there isn't one. I thought it OK to post
>> > here.)
>> > >
>> > > Thanks, Dave Horne
>> > > > >
>
>
> You will not be able to use windows defender when you have mcafee
> installed. like other anti-virus softwares, mcafee will disable windows
> firewall and defender to avoid duplicate notifications.
>
> uninstalling and reinstalling mcafee would fix this issue (it would
> reconfigure). but in your case you can uncheck windows defender from
> startup items (msconfig) 'Article'
> (http://support.microsoft.com/kb/929135) and set windows defender
> service to Manual and stop the service.
>
>
> --
> prasathkumar
>
> Thanks
>
> Prasath S

Prasath, after opening msconfig.exe (and running as administrator), I turned
off Defender. This seems to be the simpliest workaround for my problem.
Thanks! Dave Horne

Dave,

Have you fixed it yet? I am having exactly the same problem. I can not find
Windows Defender in control panel to delet as suggested on microsoft.com.

Nothing seems to be helping but apparently there is free download called
Regcure, but i'm not too sure about downaloading when I have security issues!

Pls help if you can !

"Dave Horne" wrote:

> I just started getting this error (under Vista Home Premium SP1, up to
> date).
>
> I Googled and tried a few things such as 'net start windefend' at an
> elevated command prompt. (That command also works fine at Run.) That opens
> the program and it runs just fine, but when I reboot, I receive that same
> message - something like - Windows Defender failed to initialze 0x800106ba.
> I am told to reboot and check Help or something like that.
>
> I tried to remove it under Control Panel \ Programs and Features but it's
> not listed. If I could have uninstalled it, I would have tried a fresh
> install but that seems not to be possible.
>
> Ideas? Suggestions? (I also looked for a Defender forum in
> news.microsoft.com, but there isn't one. I thought it OK to post here.)
>
> Thanks, Dave Horne
>
>

Hello Marcia,

I had the same problem with "application fail 0x800106ba" message. The
problem started after I renew my subscription for McAfee Security centre.
What I did was I followed the steps of the article:
www.support.microsft.com/kb/929135 When I went to step 2 I just unchecked
McAfee site advisor box since this was the only difference with the previous
version of the Security centre I used. After I restarted the computer the
problem disapeared. I put back all previous setting and everything seems
fine. I didn't want to use the site advisor option of McAfee but even after I
unchecked it, it still works.
Some guys suggested unticking the Defender box but I found it too drastic...
So try the steps of the article..play with the boxes and I hope is going to
work for you as well.
Regatds.

Ilian



"Marcia Pires" wrote:

> Dave,
>
> Have you fixed it yet? I am having exactly the same problem. I can not find
> Windows Defender in control panel to delet as suggested on microsoft.com.
>
> Nothing seems to be helping but apparently there is free download called
> Regcure, but i'm not too sure about downaloading when I have security issues!
>
> Pls help if you can !
>
> "Dave Horne" wrote:
>
> > I just started getting this error (under Vista Home Premium SP1, up to
> > date).
> >
> > I Googled and tried a few things such as 'net start windefend' at an
> > elevated command prompt. (That command also works fine at Run.) That opens
> > the program and it runs just fine, but when I reboot, I receive that same
> > message - something like - Windows Defender failed to initialze 0x800106ba.
> > I am told to reboot and check Help or something like that.
> >
> > I tried to remove it under Control Panel \ Programs and Features but it's
> > not listed. If I could have uninstalled it, I would have tried a fresh
> > install but that seems not to be possible.
> >
> > Ideas? Suggestions? (I also looked for a Defender forum in
> > news.microsoft.com, but there isn't one. I thought it OK to post here.)
> >
> > Thanks, Dave Horne
> >
> >

The 2009 McAfee consumer products for Windows Vista disable Microsoft Windows
Defender to improve system performance.If that 'error' message appears,
ignore it, or enable Windows Defender (Start \ Run \ services.msc) and then
turn off automatic scanning (in Windows Defender).