Rhino 8 "Unable to initialize .NET Framework (error -200)"

Rhino Rhino for Windows
1

Hello,

I am using a fresh test-installation of Rhino 8 without any plugins and Windows 11 (all updates installed). I am eager to evaluate it. Unfortunately, Rhino does not start and shows the error message “Unable to initialize .NET Framework (error -200)”. I tried the recommended repair and reboot. Nothing changed. I even performed an uninstall and install (including reboot). Still no changes. Reinstalling redistributables did not help either.

What else could I try? Thanks.

2

In case google lands anyone else here the problem is that either .net framework 4.8 or .net framework 7.0 are not installed.

Solutions are:

  1. repair the Rhino install using the Rhino installer Add/Remove Programs
  2. manually install .net 4.8 framework and .net framework
    Download .NET Framework | Free official downloads (microsoft.com)