The Global ARCHICAD Community

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Installation and download/setup issues; upgrading, operating system compatibility; getting started/training guides/tutorials. (Example: I cannot launch ARCHICAD, please help!)

Moderators: Karl Ottenstein, LaszloNagy, ejrolon, Barry Kelly, gkmethy

By RivaRivo
Hi All,

Can AC20 run on Windows 7?
I got an error message: "error missing QTCF.dll"
It is said, it come from the latest Quicktime, but that one cannot be installed on windows 7.

Any sugesstion please?
Thank you.
User avatar
By LaszloNagy
Yes, I am running ARCHICAD 20 on Windows. GRAPHISOFT states Windows 7 is compatible with it (but not tested on it): ... ents/AC20/

As far as I know AC18 an newer version do not use QuickTime at all, so it is strange error message: ... uick-time/

You can try installing QuickTime and see if that makes any difference.
(I have QuickTime installed in my Windows 7 system so I can run AC17 or older in case I need to.)
By RivaRivo
Thank you Lazlo,

Installing the latest QuickTime didn't help.
Finally, I seek for the specific .dll on the web:

and then I just put it on the C:\Windows\System32\

The installation went well to the end.