Windows Defender automatically keeps turning off...

[Cuzz]

It keeps automatically turning off unexpectedly, I am using Windows Vista
Home Basic, I also have Windows Live Onecare, it keeps doing this for some
reason and when I try to do full scan in Defender, I get an error. The
problem just occured this morning...help

 

[Nate Grossman]

It keeps automatically turning off unexpectedly, I am using Windows Vista
Home Basic, I also have Windows Live Onecare, it keeps doing this for some
reason and when I try to do full scan in Defender, I get an error. The
problem just occured this morning...help

Defender and Live OneCare are incompatible.

 

[Tom Allen]

It keeps automatically turning off unexpectedly, I am using Windows
Vista
Home Basic, I also have Windows Live Onecare, it keeps doing this for
some
reason and when I try to do full scan in Defender, I get an error.
The
problem just occured this morning...help

One Care takes over the job from Defender so Defender and also the
Windows Firewall are no longer used.

Tom

 

[MBUnit]

It keeps automatically turning off unexpectedly, I am using Windows Vista
Home Basic, I also have Windows Live Onecare, it keeps doing this for some
reason and when I try to do full scan in Defender, I get an error. The
problem just occured this morning...help

From what I understand, malware can target Defender and disable it on
Vista.