Rhino 8 does not launch after update latest update (8.22.25217.12451)

Rhino
1

Hi,

After updating rhino, the programm does not launch. We have 2 computers having this issue in our office (we did not update the others)

Are there other cases like us recently ?

Is there a way to install the previous version ?

Thanks

2

Hello,

Does that happen when you open Rhino from the shortcut or when you open a file?
If it happens with a file, please try to open Rhino from the shortcut.

If this happens using the shortcut, here are some solutions to try:

1. Install latest service release: https://www.rhino3d.com/download/rhino/8/latest

2. Repair Rhino

Go to Add/Remove programs in Windows Control panel
Single left click on Rhino and then choose Modify>Repair

Restart your machine and retry Rhino
​
3. Check that your video card drivers (https://www.nvidia.com/Download/index.aspx) are no more than 3 months old and update them.

4. Reset the license files:

- Close Rhino and delete any file in those 2 folders:

%programdata%/McNeel/Rhinoceros/6.0/License Manager/Licenses

%appdata%/McNeel/Rhinoceros/6.0/License Manager/Licenses

- And delete this file

%appdata%/McNeel/Rhinoceros/8.0/ra_cache.txt

- Restart Rhino and try to log in.

4. Start Rhino in Safe Mode (Use the Windows Search tool to find the application shortcut), to verify Rhino starts without OpenGL and plug-ins.

Assuming it does, then in Options > View > OpenGL, uncheck the option GPU Tesselation
While you’re in Options, go to the Plug-ins page and change the list filter to Plug-ins that do not ship with Rhino.

  • Disable all of them.
  • Close and Restart Rhino normally (not Safe Mode), and verify Rhino opens. If it does open:
  • Go back into the OpenGL options page and add the check back to using accelerated hardware modes.
  • Close and restart Rhino. Verify it opens properly.
  • Next, systematically go into Options > Plug-ins and enable one of the disabled plug-ins.
  • Close and Restart Rhino.
  • Assuming Rhino starts OK, keep enabling the plug-ins, ONE AT A TIME, and restart until you find the offending plug-in.
    Then you’ll know what is causing the problem and can chase down a solution.

4. Check that all Windows updates are installed.

This is very important. Sometimes the check and install process needs to be run several times until every update gets installed

You may have some failures that will require a manual download and install of the specific “KB…” update file from Microsoft.

5. Install the latest Microsoft Visual C++ Redistributable.
Install vc_redist.x64.exe from https://learn.microsoft.com/en-us/cpp/windows/latest-supported-vc-redist?view=msvc-170

6. Temporarily disable your antivirus

7. Temporarily disable your firewall

8. Uninstall your antivirus. Some antivirus programs (e.g., Kaspersky, Bitdefender) or parental control solutions intercept HTTPS connections—even when they are disabled, a component may remain active.

9. Be sure you are not connected through a VPN

Best regards,

1 Like
3

Hi CĂ©cile,

Thanks a lot for your guidance. For both of us updating C++ libraries solved the issue.

Thanks again!

4

@cecile Excellent Checklist!

However I would change the sequence a bit:

Move item 3 to item 2

Move item 5 to item 3

Just a suggestion.

5

Good suggestion!

6

Hi @cecile, this happens very often after updating Rhino (I had the issue about 3 times since last time). The issue is always fixed after re-installing Microsoft Visual C++ Redistributable. Why is this not automatic ? How was it done before ? Does Rhino Installer not check Microsoft Visual C++ Redistributable by itself anymore ?

Thanks