Installation & update
About program installation and update, hardware, operating systems, setup, etc.

Version 16 to Version 27

mdf design build

I have a file that was created in Version 16, had a major computer issue, and can not go back to Version 16 and now trying to open files in Version 27. Since I can't go back a save my file at ver 17 which was the note I received to open the file, how can now open my files in version 16? please help


Based on this document you should be able to open it in 26. Re-Save it and then open it in 27.

Scott J. Moore | Fulton Trotter Architects | BIM Manager, Associate, Architect
Since AC13 | Current versions AC23.7000 & AC26.5002 | BIMCloud Basic | Python, GDL, VBA, PHP, SQL, CSS
Certified Graphisoft BIM Manger (2022)
Win 10, i9-9900K, 32GB, Quadro P2200, 500GB NVMe

Thank you! Right now I only have a trial version of Archicad 27, I'll ask if they can supply me with version 26, thanks again!

Just download it from the Graphisoft web site ...


Make sure you choose the language version and operating system version that you want.



One of the forum moderators.
Versions 6.5 to 27
Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10
Lenovo Thinkpad - i7-1270P 2.20 GHz, 32GB RAM, Nvidia T550, Windows 11

Barry, thank you for the assistance!!!

Eduardo Rolon

Take in consideration that ALL of the work done on a TRIAL version WILL be LOST since based on the trail agreement you will need to buy a license at the end of the trial period to remove the trial DRM,

If you uninstall the TRIAL version there is no way to recover the file.

If you don't buy after the TRIAL ends the file is permanently lost.

You CANNOT open a file created in a TRAIL version on any other AC version.

Eduardo Rolón AIA NCARB
AC27 US/INT -> AC08

Macbook Pro M1 Max 64GB ram, OS X 10.XX latest
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