OS/2 2.00 build 6.149

OS/2 2.00 build 6.149 is a build of OS/2 2.0, which was mentioned in the file  from the Windows NT 3.5 build 782.1 source code. It was also mentioned several times by Michal Necasek, author of the OS/2 Museum blog, in his posts about other pre-release versions of OS/2 2.0. According to Michal, the build was compiled in July 1991.

On 28 June 2021, ReflectiaX shared screenshots of this build on his Twitter page.