Please let us inform you that even the best security software cannot protect your computer from the infection in case the harmful code is abusing some bug of installed operating system.
The updating of operating system is enabled and set as automatic by default very often. It means that operating system is looking for new updates periodically. In case a new update is available, it is downloaded and installed by operating system automatically. You may change this settings according to your individual needs.
Windows XP SP2:
Right click "My Computer" on the desktop (or in "Start" menu -> "My Computer") -> select "Properties" -> switch to "Automatic Updates" tab
Windows Vista:
Right click "Computer" on the desktop (or in "Start" menu -> "Computer") -> select "Properties" -> click on "Windows Update" link -> click on "Change settings" link
There are following options available:
- Automatic.
- Download updates for me, but let me choose when to install them.
- Notify me but don't automatically download or install them.
- Turn off Automatic Updates.
It is not recommended to deactivate the updates completely.
Please follow these steps to check for new updates of MS Windows operating system:
- Please click on the "Start" menu -> "Windows Update"
(Alternatively, you can directly open Microsoft webpage www.windowsupdate.com to download and install updates)