Thanks so much Mark! This is the only suggestion that worked for me after wasting so much time trying many things. I appreciate your contribution as well as those of all others though they didn't work for me.
The confusion thing is, how did the problem get intoduced. I didn't change the service setting to 'manual' and it used to automatically run. Also, since it was now somehow set to manual, then why was I getting the error upon start up, unless cause it was in the Start up task list and then there was a conflict with the 'manual' service setting... Oh well... Thanks again...
Quote: Originally Posted by
jhlouie 
This same process worked for me too running Windows Vista. Thanks for
posting this info!!
"mlt503" wrote:
Quote:
> > This may be a bit late but I experienced the same problem on my Toshiba > laptop running Vista Home / 32 bit OS. > I tried all the solutions online but nothing helped fix the irritating > 0x800106ba error that Defender would put up when I tried to launch it > using the icon in Control Panel. > The fix that worked for me was to go to Start/Control > Panel/Administrative Tools/Services. > I found Windefend (or Windows Defender) and left-clicked, then > right-clicked to bring up the pull-down menu. Clicked on Properties and > changed the status from manual to automatic! > I re-booted TWICE (because it was advised on one of the forums) and > it's running fine now. > Now if your Defender is already set to automatic and you're seeing the > same error, I would change it to manual, go thru ALL the above steps > (and try not to be too impatient) and then change it to automatic, > reboot twice and see what happens. > As a side note, my version of Vista won't allow un-installing Update > KB931099 to fix this problem. > Keep trying, the great feeling you get when you troubleshoot this > successfully may be the highlight of your day. > Good luck!!!! > > Mark 
> > > -- > mlt503 >