Howard, I don't know of any pre-built UDUNITS2 libraries -- but that doesn't mean there are none. Perhaps I can fix the build process. What did you do and what went wrong? The actual output would be most useful. > I was unsuccessful to build udunits-2.2.26 on Windows 10. > I wonder if pre-built binary libraries (DLL) is available for Windows 10 > from another users or from Unidata. Regards, Steve Emmerson Ticket Details =================== Ticket ID: UJP-947934 Department: Support UDUNITS Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.