Fix Value of '0' is not valid for 'emSize' vMix Error 2026
Are you facing the “Value of ‘0’ is not valid for ‘emSize’” error in vMix?
In this tutorial, I’ll show you step-by-step how to fix this annoying startup error quickly and easily.
This issue is usually caused by corrupted settings or font problems, but don’t worry — with this guide, you’ll get your vMix running perfectly again in no time.
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