Green Screen Software Windows 8. The only way to enable Windows Defender again is to completely remove third-party antivirus software. Song Parody Maker Software For Pc. This may not be the best solution, especially if you have a premium license for your antivirus program. If there is a simple hint that can make a Windows PC safer, this is: Stay away from administrator accounts. During installation, MSE recommends that you not run it with other antivirus packages, but we could install and use it with Norton Internet Security 2012 without any problems. The Windows Firewall is not as effective as any freeware firewall, but it much better than nothing and you can disable it individually if you prefer another program. Microsoft Security Essentials includes a number of new and improved additional defense technologies Rootkits and other aggressive threats.