====== Rhino 5: License manager initialization failed with error -200 or -300 ======

**Problem:**\\
Rhino 5 displays this error and will not run: \\

{{:rhino:rhino5:200.png?400}}

**Cause:**\\
Unknown.

**Solution:**
  - Uninstall the four Rhino 5 program components using Windows Control Panel:
    - **Rhinoceros 5**
    - **Rhinoceros 5 (64-bit)**
    - **Rhinoceros 5 Help Media**
    - **Rhinoceros 5 Language Pack Installer**
  - Run Windows **Check for Updates** to make sure all Windows Updates have been installed
  - Download and install the latest full version of Rhino 5 from http://www.rhino3d.com/download/rhino/5/latest

**Note:**\\
Another user reported having the same error even after reinstalling Rhino, but running a "Repair" on the 64-bit Rhino in Programs and Features corrected the error for her.

**References:**\\
SupportBee tickets:
9679912, 9525401, 9518774, 15173831, 15377325

{{tag>rhino5 rhino5installationerror_en}}