I recently had a problem with the V-Ray license server on Windows returning and error -200 when I tried to render.

It turns out the error is because the VRL service wasn’t running and no amount of reinstall and reboots helped.

Thanks to the help of friend I was able to resolve the issue by deleting a folder located at:

C:\Program Files\Common Files\ChaosGroup
  1. Uninstall the License Server from the machine
  2. Then delete the folder <code>C:\Program Files\Common Files\ChaosGroup
  3. Reboot the machine to reset the Windows Services
  4. Install the License server, it should ask for log in data now.
  5. Go rendering!

I spend hours on this so I am so happy to have friends that could help me on this, thanks Volker!