Rhino 5 Client with Rhino 6 license

Hello, please can you tell me if a Rhino 5 client is compatible with a Rhino 6 license?

Hello Andrew,

No, Rhino 5 won’t run using a Rhino 6 license key.

Rhino 5 licenses start with RH50 and Rhino 6 starts with RH60.

If you prefer, please email me your Rhino 6 license to tech.eu@mcneel.com and I will check it.

Thank you.