We have seen this with Rhino 7 & 8. Related to Forum posts

• rhino-cycles-won-t-load-issue
• Rhino not starting after new install

Problem: Rhino won't start with an error that points to Windows VCRUNTIME dll

“C\Windows\SYSTEM32\VCRUNTIME140_1.dll is either not designed to run on Windows or it contains an error. Try installing the program again using the original installation media or contact your system administrator or the software vendor for support. Error status Oxc000012f”

or

I’ve tried launching Rhino in Safe Mode and also attempted a repair installation, but it still doesn’t work If I inhibit RhinoCycles from loading and start Rhino 8 normally, it will start with no issues. If I turn back on RhinoCycles it will crash at start.

This sounds like the redistributable issue that has been reported. Try a repairing on Microsoft C++ Redistributables. Start with x86 C++ Redistributable first, then the x64 C++ Redistributable.

1. Help Us Help Others
   1. This problem is a growing issue for us, and we wish we could just make it go away. Until we know more, customers like you will need to ask us for help and potentially wait days until this issue is resolved.
   2. To open Apps & features, click the Windows Start button, type Apps & Features, and press Enter.
   3. Click Sort by > Install date
   4. Send a screenshot of the most recently installed apps to support@mcneel.com, with the subject “VC Runtime Fix Screenshot”
2. To Repair 64-bit Microsoft C++ Redistributables
   1. In Apps & Features, Right-click Microsoft C++ Redistributable (x64), then click Change.
   2. In Microsoft C++ Redistributable Setup, click Repair.
   3. Close when setup is successful.
   4. Start Rhino If it starts, you're done. If not, continue.
3. To Repair 32-bit Microsoft C++ Redistributables
   1. In Apps & Features, Right-click Microsoft C++ Redistributable (x86), then click Change.
   2. In Microsoft C++ Redistributable Setup, click Repair.
   3. Close when setup is successful.
   4. Shut down and restart the computer.
   5. Start Rhino. If it starts, you're done. If not, continue.
4. Install Windows Updates
   1. To open Windows Update, click the Windows Start button, type Windows Update, and press Enter.
   2. Make sure that all Windows updates have been successfully installed.

Happening again..? Please send a screen grab of the Windows latest installed programs. Keep one when Rhino is workings and then take one then Rhino no longer opens. Send it to Rhino Tech Support tech@mcneel.com ASAP.