Windows defender stopped working

[akshay1189]

Windows defender has stopped working after installing Microsoft Security Essentials ????

 

[Dani Santos]

Microsoft security essentials disables windows defender because windows defender is only suposed to protect you when there is no av installed

Edit: And there is no reason to have both on because they are from the same company

 

[marg]

Oh my... under win 7 they are both useless IMO. I uninstalled MSE & disabled Defender & installed Avast a while back. Both of these are totally useless in win 7 jmo. On win 8... I read they both are pretty good.

 

[Dani Santos]

Oh my... under win 7 they are both useless IMO. I uninstalled MSE & disabled Defender & installed Avast a while back. Both of these are totally useless in win 7 jmo. On win 8... I read they both are pretty good.

Yes they seem to have little detection rate in antivirus tests but he/she was not asking that

 

[Ink]

Microsoft Security Essentials, once installed will disable Windows Defender for Windows Vista and 7 as explained below:

Windows Defender in Vista and 7 is only an Anti-spyware product. MSE succeeds it.
Windows Defender in Windows 8 or later, is a full Antivirus product. MSE cannot be installed.

 

[Exterminator]

Backup?
On demand scanners?
Web Browser & extensions?
SP1 ?
Enable UAC if not on default settings