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
Solutions:
- 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
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