Unable To Obtain Network Licence (2015)

Question
You are finding that your updated license file to include the Autodesk 2015 is not able to release the licenses to the client machines and you receive the error:

 “Unable to obtain a valid license” 

However, previous version of the software are still able to obtain a network license.

Answer
You need to make sure that the Autodesk License Manager is running on the latest version.

This can be obtained from the below link:

http://knowledge.autodesk.com/support/autocad/troubleshooting/caas/sfdcarticles/sfdcarticles/Latest-version-of-the-Autodesk-Network-License-Manager.html