Uxp Developer Tool [FAST]

This validates, installs, launches, and monitors a test run – all without Visual Studio.

| Error | Likely Cause | Fix | |-------|--------------|-----| | 0x80073CF3 | Missing framework package | Install required runtime from Microsoft Store or SDK | | 0x80073D05 | Certificate expired | Re-sign with new cert (test certs last 1 year) | | 0x80073D0A | App already registered | Uninstall first or use --force | | Access Denied | Need admin rights for system-wide install | Run terminal as Admin or use --user flag | uxp developer tool

Useful for testing after registration without clicking start menu. This validates, installs, launches, and monitors a test

uxp install build.msix uxp launch MyCompany.MyApp uxp events --package MyCompany.MyApp uxp developer tool