As of April 8th, 2014 support and updates for Windows XP are no longer available from Microsoft.
AdWorks 4 users can continue using the software on Windows XP, however it is highly recommended to upgrade your operating system to a newer version, as Microsoft is no longer providing security updates which leaves your computer vulnerable to security risks and viruses.
Please note; Customers wishing to upgrade operating systems to Windows 7 or greater will require an upgrade to AdWorks v5. Should you have any questions, contact News-Net support to verify compatibility.
For more information on Microsoft’s announcement on discontinuing Windows XP support, please visit the Microsoft website: http://windows.microsoft.com/en-ca/windows/end-support-help