Press and hold the Windows button and press R on your keyboard. The following instructions will register this file. Microsoft is not extending the Mainstream Support phase for Microsoft Visual Basic 6.0 in any way. If the error still occurs, this may mean that the Tabctl32.ocx file may also need to be registered. Microsoft Visual Basic 6.0 has transitioned to Extended Support which runs through March 31, 2008. However, we are releasing this non-security related package because it contains improvements that were ready for release just prior to the end of Mainstream Support. Mainstream Support for Microsoft Visual Basic 6.0 ended on March 31, 2005. Developer Microsoft Corporation Product RichText Description RichTx32.OCX Filename Richtx32.ocx Version Size 214.