Rhino 7 loses Zoo settings on update

There was a problem very early with Rhino 7.3 or 7.4 and older, and subsequent updates after that. Is it possible that your initial deployments are still on quite old builds of Rhino?

My recommendation is that you push the Zoo server IP address to the registry via a login script to fix this. The registry key to push to is in this article:
https://wiki.mcneel.com/zoo/findzooserverwi

Here’s another user’s solution:

Also, I recommend that your deployment be updated to install the latest 7.14 build so that future users don’t have this problem.

If you can send me the Rhino*.log files from the %temp% folder on the user’s computer, I can look deeper into the specific cause of the problem on these machines.