Error 1602 Installing Software Application MSI or EXE

Error 1612 the installation source is not available
 or
Returned failure exit code 1612. Failed the installation

Resolution

  1. Open Regedit
  2. Navigate to [HKEY_CLASSES_ROOT\Installer\Products\
  3. Find the key associated with the product trying to install and delete it
  4. Re-run the installer