This short article shared why you should migrate you VB6 to VB.NET as soon as you can.
Below are only the few factors that you should move away from VB6. In fact there are more if you search through Google.
3. VB6 Migration Assessment Tool is based on .NET Framework 1.1. Newer Operating System is no longer .NET Framework 1.1 friendly.
4. You need Excel 2003 not Excel 2013 to generate the analysis reports.
5. Visual Basic 6.0 IDE [Integrated Development Environment] is no longer supported as of April 8, 2008 https://support.microsoft.com/en-us/gp/lifedevtool.