MSI error 1624

1624 (ERROR_INSTALL_TRANSFORM_FAILURE) is a Windows Installer error related to transforms.

Possible causes (but not exclusive):

  • MST file is missing (or misspelled)
  • MST file is not valid (mst internal errors)
  • MST file is corrupted


  • Make sure the command line points to the correct location of the MST and that the name is correct
  • Check for MST internal errors if you’ve edited it yourself
  • Try to redownload the MST file, in case it might be corrupted