To obtain AppRemover, visit the following OPSWAT website: If you aren't sure which security programs are installed on the computer, you can use the AppRemover utility from OPSWAT, Inc. Note Security software typically includes antivirus, antispyware, or antimalware programs. By default, MSE uses the Windows Firewall. By removing these products, the Windows Firewall will be enabled. Some security programs have their own firewall. Also, make sure to completely uninstall the security program that you were using before you installed Microsoft Security Essentials. This includes any free or trial products that were pre-installed when you bought the computer, even if those products were never activated. Make sure that all traces of the security programs that are installed on the computer are removed. This issue may occur if other security software, such as antivirus, antispyware, or antimalware programs, are fully or partially installed on the computer.

You can't turn on real-time protection in Microsoft Security Essentials (MSE).