Installation: Silent deployment fails due to missing prerequisites or incorrect transform

Description
IT attempts to deploy desktop applications via silent or unattended installation (MSI/EXE with command‑line switches), but installations fail without clear GUI errors. Log files may show missing prerequisites (e.g., .NET, VC++ runtimes) or incorrect MST transform usage.

Solution

1. Enable detailed installation logging
   • For MSI installers, use a verbose log, for example:
     msiexec /i setup.msi /qn /L*V install.log
   • For EXE‑based installers that wrap MSI, consult documentation for a logging switch (often /LOG or similar).
2. Review log for clear errors
   • Search for:
     • “Return value 3”
     • “Error” or “failed” lines around the failure timestamp.
   • Identify whether:
     • A prerequisite check failed (e.g., unsupported OS, missing framework).
     • A property or transform was invalid.
3. Verify prerequisites separately
   • Confirm target machines meet documented requirements:
     • Windows version and bitness (32/64‑bit).
     • Required .NET Framework version.
     • VC++ runtime versions (if applicable).
   • If prerequisites are missing, deploy them first via your software distribution tool, then rerun the silent install.
4. Validate transform (MST) usage
   • If using an MST:
     • Ensure it was built against the same MSI version as the one being deployed.
     • Test the MSI + MST combination on a single machine with full UI to confirm it installs correctly before using it silently.
   • Command example:
     msiexec /i setup.msi TRANSFORMS=custom.mst /qn /L*V install.log