Windows 3.1 RC2

Windows 3.1 RC2 is mentioned in an internal Microsoft document from 1992-02. This build is part of the Release Candidate stage and, like other RC builds, is not referred to by it's actual build number, but is instead simply called "RC2" everywhere.

According to the document, several third party applications were tested on this build. It was also installed on some systems in buildings 8, 9, 16 and 21 on Microsoft campus in mid 1992-02. 78 installation attempts were performed, of which only 7 (roughly 9%) failed. Additionally, 11 users (or 15%) of successful installations experienced minor issues during or after installation.