Revit Autodesk: license server issue

You might experience some issues when using a licensing server for Revit Autodesk.

To resolve this issue you have to disable IPv6 on the Server.
To do so, perform the following steps:

Run remote Desktop to the server.
Right-click the network icon in the bottom right corner & Choose "Open Network and Sharing Center".
In the following window, click on the connection you have (marked in red below).
Choose "Properties".
Uncheck the box "Internet Protocol Version 6 (TCP/IPv6)".
Click "OK" to confirm your changes.