|A version of the Microsoft Windows operating system|
|Working state||Never released|
|Kernel type||Windows NT|
Windows Odyssey was intended to replace the business-oriented Windows 2000. Development began in 1999 and was based on Windows 2000. The version number of Windows Odyssey is still unknown and unverified sources claim it as Windows NT 6.0. Features found in Windows Odyssey was the new Activity Center and the new user interface.[failed verification] However, due to high hardware requirements and because Windows Odyssey and the consumer-based Windows Neptune were based on the same codebase, Microsoft combined them to form codename "Whistler" which would later be Windows XP for efficiency. No version of Windows Odyssey was officially released.
- "A (very) brief history of Windows XP". Neowin. Retrieved 2017-07-08.
- "The Road to Gold: The development of Windows XP Reviewed". itprotoday.com. Retrieved 2019-06-16.
- "Windows Odyssey - BetaArchive Wiki". www.betaarchive.com. Retrieved 2019-06-16.