Microsoft Extended Support for Windows Server 2003 ended in July 2015.

This means that it is no longer a supported operating system and Microsoft have ceased providing security updates for this OS.

https://support.microsoft.com/en-us/lifecycle?p1=10394

If you have not already migrated your application to a supported operating system (Windows Server 2008R2 is the recommended version) then it is essential that you do so as soon as possible to prevent possible compromise via un-patched security vulnerabilities.

As per our previous announcements, when requested, we will provide Windows 2003 VPS customers with an equivalent Windows 2008 R2 VPS free of charge for one month to allow for migration. When the older 2003 VPS is deactivated, any remaining time can be moved pro-rata to the new VPS so there are no cost implications for early migration.

The scheduled shutdown date for all Windows 2003 VPS hosting is July 14th 2016 (one year after the 2003 EOL).

We strongly recommend that all VPS customers that have not already commenced migration planning, begin this process without delay in order to allow time to test your new application instances.