My Windows Defender will not stay on, even have to manually start

[RWP]

I have Care one as my Virus Protector and my windows defender will not work
unless I manually turn it on, and then it will only stay on for 30 minutes,
sometimes 1hr and then it turns back off and the little icon goes from green
to yellow, I have uninstalled it, and still get the same, Please any help on
this I could use,

 

[Engel]

Hello RWP,

MS Defender is part of One Care!
So it is up and running.
Click CRL/ALT/DEL and see of MsMpEng.exe is running in processes.
Thats why Defender wont install

See Stephen Boots MVP-MSN Client's reply to an earlier post involving
the error:
If OneCare is installed on a PC running Defender, it is disabled by OneCare
and OneCare takes care of the protection functions of Defender. You cannot
install Defender on a XP computer with OneCare running.
If you remove OneCare, Defender is enabled as part of the uninstall process,
if it existed previously on an XP machine and always on a Vista machine.
On both XP and Vista, if you start Defender from the Start menu, it will run
and you can use the utilities in Defender since they do not exist in the
OneCare interface. However, OneCare will always shut Defender down again at
reboot.
If you are running XP with OneCare you can uninstall Defender without
consequences to OneCare, but you would then need to reinstall it (if desired)
when you remove OneCare. In Vista, Defender cannot be uninstalled, only
disabled.
The OneCare anti-malware team was evaluating what it would take to include
access to the extra utilities in Defender through the OneCare interface, but
I have not yet heard on the status of this. I'm hoping it may be in the next
version of OneCare, slated for beta soon, or the next version after that,
slated for the end of the year or early 2008.
-steve

I hope this post is helpful, but we would highly appreciate it if you could
rate the pºst, so we can keep the community informed.
-=-

 

[Lakeflake]

But wouldn't it have been nice if MS thought to put that notice somewhere in
either the Defender or One Care package? Or, would that have been too much
trouble for them to think of the customer? They want us to use their
software (the push for OneCare continues to this day) but no where does it
say that it'll disable another of THEIR OWN PROGRAMS! Just a thought by a
long time MS customer.

 

[Lisa]

I mwish this had known this! For a year I have been messing with my PC
screwing things up no doubt, trying to fix this. at least TELL US IF YOU ARE
GOING TO DISABLE A CRUICIAL COMPONENT OF OUR COMPUTER'S DEFENSE SYSTEM.