Serial Number Vmix ((better)) -

You typed O instead of 0 (zero), or I instead of 1 . Fix: vMix serials use only numbers and uppercase letters A-F. Copy-paste directly from your email to avoid typos. Never retype manually.

If you try to enter a "Basic HD" serial number into the vMix Pro installer, it will reject it. You must match the installer version to your serial number's tier. serial number vmix

You installed vMix Pro but bought a Basic HD license. Fix: Uninstall and download the correct tier installer from the vMix Legacy downloads page. You typed O instead of 0 (zero), or I instead of 1

You cannot run vMix on two PCs at once with one serial. If you try, the second PC will show "License already activated on another computer." Never retype manually

Report compiled based on vMix documentation, EULA, user experience data, and support knowledge base as of 2026.

: To update your license (for example, if you upgraded to a higher version), go to Settings > About and select Change Registration Key . 🛡️ Security Tips