You can install the Threat Detection test tool on most computers running Microsoft Windows (Windows XP/2000/2003/Vista including 64 bit versions) that satisfy the system requirements, with the following exceptions:

* do not install on a computer where Sophos Anti-Virus is already installed
* it is recommended that you do not install it on a server, because when you remove the tool, you must reboot the computer.

What to do

1. Log on to the computer you want to scan, using an account that has administrator privileges.
2. Go to the download location given in the email instructions that you received, and download the Sophos Threat Detection Test (aprox 37 MB).
3. Click ‘Open’ to extract the file’s contents to your computer and start the installation wizard.
4. During installation, you will be asked for updating credentials. Enter the username and password given in the email instructions that you received.

Once you have installed the tool, right-click on the shield icon in the task bar, open Sophos Anti-Virus, and click ‘scan my computer’. This will initiate a background scan of your local disks. Click ‘Manage Quarantine Items’ to view any infections.