From: "Damián M. González" Date: 2013-04-11T22:38:10+09:00 Subject: Re: Windows 7 64bit win32ole connect method Excel Works fine for me in the same system, same Ruby version, I have no Rails version installed. excel = WIN32OLE.new('Excel.Application') excel = WIN32OLE.connect('Excel.Application') So you have Microsoft Office installed.. -- Posted via http://www.ruby-forum.com/.