This may (or may not) be useful in understanding cause of “Unable to refresh license” messages.
Licenses are in the Cloud Zoo.
Message about “Unable to refresh License” on desktop resolved after starting Rhino on laptop, and then starting Rhino on desktop.
Sequence of events.
When starting Rhino 7 or Rhino 8 on my desktop the notifications panel had been showing “Unable to refresh license for Rhino 7” with a yellow triangle. No message about license from Cloud Zoo. appeared. Rhino opened and worked normally.
I went to https://accounts.rhino3d.com/ and logged in. Message still appeared. when starting Rhino 7.
I restarted the desktop. Started Rhino 7 and the message was still there.
I turned on my laptop and started Rhino 7. Rhino has not been used on this machine for over a week, possibly two weeks. Message about license from Cloud Zoo appeared as Rhino 7 was starting. Notifications panel shows “License obtained for Rhino 7” with a green triangle. Closed Rhino 7.
Started Rhino 7 on my desktop. Message about license from Cloud Zoo appeared as Rhino 7 was starting. Notifications panel shows “License obtained for Rhino 7” with a green triangle.