There have been times when I have forgotten the MSI or EXE I installed a software from and I need the file path of the installer to use it elsewhere. Is it possible to know the MSI or EXE from which a software program was installed?
You can try to look under:
HKEY_CLASSES_ROOT\Installer\Products (look under a GUID for the SourceList items)
The 64-bit path will be slightly different. I don't have the exact one since I run this old clunker PC at the moment.
IMPORTANT: Do not under any circumstance delete anything from HKEY_CLASSES_ROOT\Installer\Products! It is the Windows Installer database - it is very fragile if tampered with.