When you try and install multiple antivirus (AV) solutions on a system running the Microsoft Windows operating system, the installation of other solutions may be blocked by the installed due to the fact that a security software is already running on the system. The core reason for this seem to be incompatibilities, but performance and system stability need to be mentioned in this regard as well.
You may already know that Microsoft will ship Windows Defender with the Windows 8 operating system, which is comparable to the Microsoft Security Essentials program that is not compatible with Windows 8. At least the front of Windows Defender running on Windows 8 looks very similar to Microsoft Security Essentials on Windows 7.
The following two screenshots show Windows Defender on Windows 8 and Microsoft Security Essentials on Windows 7.
A difference between Windows 7 and Windows 8 is that the new version of Windows Defender will be automatically installed in Windows 8. This move has caused quite some concern, as third party security software companies feared that the move would impact their business in a negative way. But it was not only antivirus companies who criticized Microsoft for the move, OEMs too did not like the fact as they made a good chunk of money with every antivirus trial version that their PCs shipped with in their initial stage.
According to Everything Microsoft, Microsoft has reacted to the criticism and has configured Windows Defender as the last resort antivirus software on the operating system. This means the following:
- If another antivirus solution is detected by Windows Defender will not be activated on Windows 8 for the time being.
- Windows Defender will however monitor the updating of the antivirus solution and will begin a 15-day countdown.
- The user in this time will be informed that the current AV has expired or not been updated for a certain amount of time.
- When there is no action on part of the user to remedy the situation, Windows 8 will suggest to the user to install Windows Defender, or a comparable third party antivirus software from Microsoft Store on the system.
We do not know yet how effective the detection is, and if free and commercial security solutions will all be recognized by Windows 8. It is likely that users will have options to manual intervene in the process at any time should the operating system fail to identify an installed security solution properly.