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.

On 28 June 2021, ReflectiaX shared screenshots of this build on his Twitter page. It is the first build to remove the Microsoft copyright notices due to the split between Microsoft and IBM's development on OS/2.