In January 1999, Microsoft founded the codenamed <nowiki>"Rapier" for kernel type is Windows CE 3.0 running smillar for operating system Windows 95 and Windows 98, in February 1999, Microsoft starting history from beta version in codenamed "Rapier"</nowiki>, in March 11, 1999, Pocket PC 2000 build 200 is leaked on Internet officially, the news Pocket PC 2000 build 301 can be released on April 14, 1999, leaked on January 14, 2020 in BetaArchive. In May 15, 1999, Pocket PC 2000 build 302 can be released new version. 