2014

Table Of Contents
Understanding Your Network License
How Your License Works
When you start an Autodesk product, it requests a license from the license
server through the TCP/IP network. If a license is available, the Network License
Manager assigns a license to the computer, and the number of available licenses
on the license server is reduced by one.
When you exit a product, the license returns to the Network License Manager.
If you run multiple sessions of an Autodesk product on an individual computer,
only one license is used. When the last session is closed, the license is released.
The following three items manage the distribution and availability of licenses:
License manager daemon (lmgrd or lmgrd.exe) handles the original
contact with the application, and then passes the connection to the vendor
daemon. By using this approach, a single lmgrd daemon can be used by
multiple software vendors to provide license authentication. The lmgrd
daemon starts and restarts the vendor daemons as needed.
Autodesk vendor daemon (adskflex or adskflex.exe) tracks the Autodesk
licenses that are checked out and the computers that are using them. Each
software vendor has a unique vendor daemon to manage vendor-specific
licensing.
NOTE If the adskflex vendor daemon terminates for any reason, all users lose
their licenses until lmgrd restarts the vendor daemon or until the problem
causing the termination is resolved.
License file is a text file that has vendor-specific license information.
License Sharing and Cascading
The Network License Manager (NLM) enables several Autodesk products on
the same computer to share a single license when appropriate. For example,
if you launch AutoCAD, the NLM can assign a single AutoCAD license to your
computer. Later, if you launch Revit, and there are available licenses for the
Building Design Suite (BDS), the NLM can take back the AutoCAD license and
upgrade your license to a BDS license that can support AutoCAD, Revit, and
other BDS products running concurrently. If you then shut down Revit and
other BDS products, so that you are running only AutoCAD, the NLM cannot
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