Hi Jill, Uninstall and reinstall Defender if you must use it. I think it is a whole heap of junk myself, so I would say uninstall it and leave it uninstalled, but that's up to you <Smile>. All the best Steve _____ From: access-uk@xxxxxxxxxxxxx [mailto:access-uk@xxxxxxxxxxxxx] On Behalf Of JILLIAN GRANT Sent: Monday 20 April 2009 03:12 To: access-uk@xxxxxxxxxxxxx Subject: [access-uk] problem with windows defender Hi. J 10 with latest update, W V Premium. I've had this problem for a long time now, and wonder if anyone has any ideas on how I can fix it. I ran a full system scan with Defender and no problems were reported. Since then, each time I switch on my comp I get the following message: 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 the service manually. Then there's an Okay button which I click on to get rid of it. I tried restarting the machine, but to no avail. I also tried starting it through the programs list, but still the same. I've also tried getting windows to search for a solution to fix this problem, but nothing. I have a feeling Defender has become corrupt in some way, but don't know how. any ideas what's gone wrong and how to rectify it please? Thanks. Jill.