Since Microsoft never officially released a "Portable" version, these are community-made. To ensure a smooth experience:

If the portable route seems too fragile, consider these modern alternatives that are 100% legal and free:

: Official Mainstream Support for VB6 ended in 2005. While the runtime is still supported on Windows 10 and 11, the IDE is considered "at your own risk" software. How to Run VB6 Portable on Windows 10 & 11