Mr. Enrico, it's the same, even using minizip.lib. If just for testing, I comment out minizip.lib, it generates several errors. The strangest thing is that if you remove the password, it works. Probably you are not using the latest Harbour build: https://github.com/FiveTechSoft/harbour_and_xharbour_builds/blob/master/harbour_bcc770_32_20240814.zip