Locate the folder explicitly named or vMix .

: Local registration files became corrupted after a Windows update or a sudden crash.

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Avoid system optimization apps that scrub registries automatically. These tools often erase the internal hardware keys vMix relies on to lock an activation to your motherboard. Summary Checklist for Quick Deployment Action Item Target Issue 01 Audit your account via the vMix Portal Login Exceeded activation seat limits 02 Purge %localappdata% configuration caches Corrupt internal XML files 03 Apply "Run as Administrator" status Blocked app communication paths 04 Install the client over the top of the current build Missing or damaged application files