====== License manager initialization failed with error -200 ======

{{:rhino:error-200.png?400|}}\\ 
===== Rhino 8 won't start with this error =====

  - Do all the Windows updates
  - Install Rhino .NET Desktop Runtime 7.0.20 x64 “//windowsdesktop-runtime-7.0.20-win-x64.exe//” Download here: https://dotnet.microsoft.com/en-us/download/dotnet/7.0
  - Start Rhino and test

If Rhino will //still// not open without this error, modify the Rhino shortcut with the /netfx switch.
{{:rhino:rhino_netfx_switch.png?400|}}
-

Add this to the Rhino 8 shortcut as show above.
/netfx initializes .NET framework 4.8.
Now open Rhino with the short cut.

For additional help, email Technical support at **tech@mcneel.com**.
//Include your Rhino System Information: in Rhino type **SystemInfo** command.
Copy and paste the text results into your reply//

===== Rhino 6 won't start with this error =====

**Solution 1:**
Run a "Repair" on the 64-bit Rhino in Control Panel > Programs and Features to correct the error.

**Solution 2:**
If you have ShapeDiver v1.9.1 for Grasshopper installed, run the TestPackageManager command, and update ShapeDiver to v1.92-beta.1 or above. \\
(ShapeDiver does not cause this error for Rhino 7.)