Windows XP build 2197

Windows XP build 2197 are two unleaked builds of Windows XP compiled in early 2000. One of them was mentioned in an IT Pro article from 13 February 2000, where Paul Thurrott claimed that build 2197 was the first internal build of Whistler and that it had gone out internally "weeks ago".

The build numbers are mentioned in several files in the leaked Windows XP source code, including the full build tags:

A script file possibly related to Windows Update, which was found in the 2022 Microsoft source code leak, also checks whether the build number is 2197 or above: