I've got a strange problem with ArchiCAD 20. Shortly after I start working with a file, all of a sudden in the upper bar it appears the indication that the file is read only (name file [Read-only]). Do you now how to solve this issue?
Has somebody else opened the same file and taken "Exclusive Access"? - which will change you to read only.
Or are you saving the file directly to a file sharing folder - Dropbox, iCloud, Onedrive or similar?
One of the forum moderators. Versions 6.5 to 25 Dell XPS- i7-6700 @ 3.4Ghz, 16GB ram, GeForce GTX 960 (2GB), Windows 10 Dell Precision 3510 - i7 6820HQ @ 2.70GHz, 16GB RAM, AMD FirePro W5130M, Windows 10