No license found for Archicad 26, 27 and 28

[Voytek]

Since a few days ago, when trying to access Archicad 26, 27 or 28 a "No license found" window opens. Upon selecting "Manage Licenses" it is confirmed that I do own commercial license for Archicad Studio USA. There are no issues with Archicad 25 and older, as well as Archicad 29 Technology Preview.

Could anyone please advise how to resolve this issue?

Operating system used: Windows 10

[Voytek]

Thank you @Karel Landa  and @Barry Kelly for helpful replies.

Opening and working on Archicad 26, 27 and 28 International (INT) files with the current subscription license has been my main issue.

As it appears, I would be able to open my Archicad 26, 27 and 28 INT files once I upgrade to Archicad Collaborate. As I have no plans to do this currently, I arrived with a work-around. The work-around I have tried is to un-install Archicad 26, 27 and 28 INT and install Archicad 26, 27 and 28 USA instead. By doing so, I am at least able to open and work on my INT files; however, I have an issue with missing library parts. Considering the amount of projects involved and the numerous library parts missing, this solutions is far from ideal.
Could anyone please advise whether there is an efficient way to open and manage Archicad 26, 27 and 28 INT files with Archicad Studio USA license.

[Barry Kelly · Accepted solution]

You won't be able to run 26, 27 & 28 INT, but you can still use the libraries from those versions.

So don't un-install them until you have copied out the libraries.

Or if you have plenty of disc space, just rename the program folders from say "Archicad 26" to "Archicad 26 INT".

Then you can install the USA version and still have access to the libraries in the INT versions.

Barry.