My Biggest beef about Rhino 6 is the reliance on a web connection

I have been using Rhino since version 3 and have to say the latest verson 6 Is one of the most anoying versions to date. It promises so much but lets you down so many times.
Unpredictably it will move layers around in the layout window so if like me use sublayers to categorise elements they end up in the wrong place.

The print engine is very poor escpcsially when priinting to PDF, Sometime it’s fine, next time it will thicken up all your layout lines and for some unaccoutbale reason create multiple images of the layout details across the page. Very decorative but very annoying. The only way I have found to stop this once its happened is to restart the program.

Then there the stupid licencing sysem using Zoo.

On of my high security clients has an office in a basement with no internet access or mobile phone access as they work on very condienctial designs. I cannot show him any of my models in Rhino 3D as I simply cannot connect to the outside world. Bascialy they run an intranet for security reasons so I am totally lost with Rhino 6 which keeps asking me to connect to the internet. Is there ANY way to run Rhino 6 Standalone ???.
I have paid good money for the software for MANY years and yet now I cannot use it when travelling without paying extortionate connection fees, or connecting to public (unsecure) networks that is not really good for me or my clents who will allow VPN access end to end.

As it is I will keep rporting the bugs as I find them but I am starting to think this will be going on for some time.

Any chance Rhino 6 will be bug free anytime soon as I am finding it very glitchy in its current form.


No problem with that. I was never connected to the zoo, so I guess your solution is to not connect to the zoo in the first place. :wink:

They’re working hard on fixing bugs which are reported. Don’t worry.

// Rolf

V6 can be licensed in these three ways:

  1. Single-computer: use Rhino exclusively on one computer.

  2. Floating licenses across a company’s private network using the Zoo.

  3. Share license on multiple computers using Cloud Zoo For Rhino 6.

  • Add your license and it will float to any computer you have access to using the Internet instead of a local area network by logging in with your Rhino Account.

  • For multiple users, use the Cloud Zoo to create teams, add multiple licenses, and invite users to join the Team to share the licenses over the internet.


Am I missing something… I always just “Check it Out”… I did this just last week to use Rhino 6 on the plane from Dallas to Boston.

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I think there is some confusion here.

@logikman seems to think you need an Internet connection to run V6. You do need an Internet connection about once every two weeks if you’re using the Cloud Zoo.

If you’re using the LAN Zoo like @jwheel811 described, you don’t. You also don’t need Internet for stand-alone installations.

If you’re working off-line exclusively, then you’ll need to manually check for service release updates.

Licenses can be “Checked out” if you’re using the LAN Zoo AND if the feature has been turned on. If you have not checked out a license, then you’ll need a VPN connection back to the office network where the LAN Zoo is to run Rhino.
In this regard, for traveling, the cloud Zoo is much easier to use.

The license agreement for V6 did not materially change. It’s still limited to the number of licenses you own. What did change is for stand-alone licenses, we now limit that to one machine. In V5 we didn’t have a good way to check and it turned into a mess. A V6 stand-alone license can be moved to a different machine but that does require an internet connection.
If you’re using the cloud zoo and sharing your personal license between multiple computers, starting Rhino does add one mouse click.

What have I missed?


Many thanks for all your comments

I have just updated the software on my laptop to the latest service release and the problem seems to have gone away ?? Now when I log the laptop into the zoo and download the license on to that machine I can work on it with internet disabled.

No idea what was wrong before but whatever the new service release seems to have resolved it ??


I am very concerned about security due to the nature of my work. Is there any McNeel publication which describes all license details and all security vulnerabilities?

My system info says: “License details: Cloud Zoo.” Does it means that it is standalone license?

What is the purpose of “change your license key” button in Options>Licenses?

Just in case… is there a country where the checking might fail?
or security that blocks the check?

Here are some links to support pages (with other sub-pages) that I think cover your concerns:

Please review these and come back with specific questions if you have any.

So far we are not aware of any countries where this is a problem.
We are aware of a firewall protection that Hewlett Packard uses which effectively blocks on-line V5 license validation and use the the V6 Cloud Zoo. This is the only blocking we are aware of.

If you’re concerned about traveling, you can always change from Cloud Zoo or LAN Zoo licensing to Stand-alone:

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What is the meaning of “license validation”? Does it mean that I have to type, by hand, every letter of the license number and my email address twice when I install Rhino update (e.g., from 6.5 to 6.6)?

Has McNeel obtained any certificate which says that the Cloud Zoo is not a security risk?

This should cover the security risk questions:


Hi Andrew,

Is there a source of a certificate that would make you feel comfortable that Cloud Zoo is not a security risk? What would that certificate communicate to you? Are you looking for a third-party audit of our systems?

Also, what kinds of security risks are you concerned about? I can think of many, so I won’t even list my own concerns. Perhaps if you could elaborate on the risks you’re thinking about, I can help you understand how likely it is that the Cloud Zoo would be a problem for you.

I have very good reasons not to share my Rhino files/models with hackers. I use Webroot SecureAnywhere antivirus program. How secure are my Rhino files/models, in your opinion?

Suppose that I have the single-computer license. Do I have to go through the “license validation” nuisance every time I install Rhino update (e.g., from 6.5 to 6.6)?


The cloud zoo does not store your files, only your license keys…

In addition, the Cloud Zoo doesn’t have a mechanism to access your file system at all. Here’s what it does do:

  • When it starts for the first time, it communicates with our Rhino Accounts server over a secure HTTPS connection to It then communicates with our license server at
  • While you are running, it maintains a connection to This connection allows your license to stay current and refreshed, helps us understand patterns of usage, and makes it possible for us to make sure your license is in use on only one computer at a time.
  • When you close Rhino, all connections to our servers are closed.
  • There isn’t a way for our servers to request information from Rhino
  • Rhino never sends information to the Cloud Zoo that contains your personal data (aside from your account and license information, of course).

But there are some big benefits of the Cloud Zoo:

  • When you install Rhino on multiple computers, you can use your license on any of them by just logging in.
  • The Cloud Zoo makes sure you are within the limits of the license agreement, so you don’t have to worry about it.
  • Your computer can die completely, and you’ll be able to get a new one up and running by installing Rhino and logging in - you don’t need to contact us to get another chance at installing and validating your license.

Hope this helps.

Thousands of U.S. citizen do classified CAD work (mostly weapon design) and they want to know whether Chinese spymasters have bribed the CAD programmers. I could not find info on the Internet about security certification for CAD programs, but I believe that there is demand for such certification.

The National Security Agency (NSA) approved some cell phones for government and military use. It may offer security certification for CAD programs.

Defense Information Systems Agency (DISA) provides secure communications for the U.S. government, its military services, and individuals contributing to the defense of the United States. DISA may be the best source of information whether such CAD certification exists.