When will there be 64-bit support for Sophos Anti-Virus
According to Sophos…
Enterprise Solutions: Windows Server 2003 64-bit support
Sophos products do not currently provide support for 64-bit versions of Windows XP or Windows Server 2003. We are currently working on providing support for these environments and plan to release compatible products in the second quarter of 2006.
If you need more information or guidance, then please contact technical support.