https://community.graphisoft.com/t5/Installation-update/AC-Windows-Upgrade-for-AC-9/m-p/119799#M14181 Here is an article on ArchiCADWiki that covers the AC9 on Vista installation issue.<BR /> I had the same problem and with the help of this article I could install AC9 on Vista. Tue, 20 Oct 2009 13:28:28 GMT Laszlo Nagy 2009-10-20T13:28:28Z https://community.graphisoft.com/t5/Installation-update/AC-Windows-Upgrade-for-AC-9/m-p/119798#M14180 <DIV class="actalk-migrated-content">Looking at upgrading (long overdue) some systems in the office. We have some old ArchiCAD 9 projects still on-going. I remember trying on personal computer equipped with Vista and AC9 could not run unless some custom installation of ArchiCAD.<BR /><BR />Does anyone have any inputs on operating AC9 on Vista?<BR /><BR />How about Windows 7, can AC9 run on it? Special requirements or installations?<BR /><BR />How about Door/Windows Builder which we use for most of our projects, any issues w/ Vista or Windows 7?<BR /><BR />ALL inputs VERY welcome at this point!<BR /><BR />Aloha,<BR />PB</DIV> Fri, 26 Apr 2024 08:25:54 GMT https://community.graphisoft.com/t5/Installation-update/AC-Windows-Upgrade-for-AC-9/m-p/119798#M14180 Anonymous 2024-04-26T08:25:54Z https://community.graphisoft.com/t5/Installation-update/AC-Windows-Upgrade-for-AC-9/m-p/119799#M14181 Here is an article on ArchiCADWiki that covers the AC9 on Vista installation issue.<BR /> I had the same problem and with the help of this article I could install AC9 on Vista. Tue, 20 Oct 2009 13:28:28 GMT https://community.graphisoft.com/t5/Installation-update/AC-Windows-Upgrade-for-AC-9/m-p/119799#M14181 Laszlo Nagy 2009-10-20T13:28:28Z