Please read "Check list for installing Microsoft Security Essentials". Specifically paying attention to #3 where it states in part:
Remove ALL real-time anti-malware products that WERE EVER INSTALLED on your PC (Norton, McAfee, TM, AVG, avast, avira, MBAM (paid), etc). . Uninstall your previous real-time antimalware. Then, use the removal/cleanup tools in this thread. Not only should you remove your current anti-malware product(s), you should also uninstall any free or trial anti-malware products that may have been installed on your PC when purchased, even if never activated.
The Norton Removal Tool can be found here:
Best of luck..
My mom has norton on her computer now and is getting ready to expire so I downloaded and installed Malware & Microsoft Security Essentials. Malware & MSE will not do a scan as both programs want an update first. I am unable to do an update on either program as my mom's computer keeps shutting down and I have to log back in. Is this happening because Norton is still on her computer? If I remove Norton will I then be able to the updates? If Norton isn't the problem, any ideas on what else it could be? Mom is getting nervous as she thinks Norton will expire before I get this fixed and she won't have any protection.
Thank you for in advance for any assistance you can give me with this issue,