Number of websites hosted on Windows XP are also still high despite Microsoft end-of-support.
Almost 500,000 websites are still hosted on Windows 2000, an even older operating system than XP, it is claimed.
Official support for Windows 2000 was pulled in July 2010, yet half a million sites still run on Windows 2000 servers, using the Microsoft IIS 5.0 web server software it was originally shipped with, according to Netcraft.com.
The figures show how the legacy of operating systems like 2000 and XP are still persisting despite official support not being in place.
A survey by Netcraft also found that 50,000 websites are hosted on older Windows NT4 servers running Microsoft IIS 4.0, with the busiest Windows NT4 website being the Australian Postal Corporation’s post.com.au.
Netcraft also found that there are still 14 US government sites that still run on Windows XP, making them liable to attack by hackers exploiting Microsoft’s end of support for the operating system.