| "winapp.yaml not found" | Running restore or update without config | Run winapp init first, or cd to the directory containing winapp.yaml |
| "Package.appxmanifest not found" | Running package, create-debug-identity, or cert generate --manifest | Run winapp init or winapp manifest generate first, or pass --manifest <path> |
| "Publisher mismatch" | Certificate publisher ≠ manifest publisher | Regenerate cert: winapp cert generate --manifest, or edit Package.appxmanifest Identity.Publisher to match |
| "Access denied" / "elevation required" | cert install without admin | Run terminal as Administrator for winapp cert install |
| "Package installation failed" | Cert not trusted, or stale package registration | winapp cert install ./devcert.pfx (admin), then Get-AppxPackage <name> | Remove-AppxPackage |
| "Certificate not trusted" | Dev cert not installed on machine | winapp cert install ./devcert.pfx (admin) |
| "Build tools not found" | First run, tools not yet downloaded | Run winapp update to download tools; ensure internet access |
| "Failed to add package identity" | Stale debug identity or untrusted cert | Get-AppxPackage *yourapp* | Remove-AppxPackage to clean up, then winapp cert install and retry |
| "Certificate file already exists" | devcert.pfx already present | Use winapp cert generate --if-exists overwrite or --if-exists skip |
| "Manifest already exists" | Package.appxmanifest already present | Use winapp manifest generate --if-exists overwrite or edit manifest directly |
run / create-debug-identity registration error 0x800704EC | Developer Mode is disabled | Enable it in Settings → Privacy & security → For developers, or Set-ItemProperty -Path 'HKLM:\SOFTWARE\Microsoft\Windows\CurrentVersion\AppModelUnlock' -Name AllowDevelopmentWithoutDevLicense -Value 1, then retry |
run / create-debug-identity registration error 0x80073CFB | Package already registered with a conflicting identity | Run winapp unregister (or winapp unregister --force if the package was registered from a different project tree), then retry |
