When a user
starts an Autodesk product, the product determines the server from
which it should try to obtain a license. The product then requests
a license through the TCP/IP network protocol to the license
If the number
of available licenses has not been exceeded on the license server,
the Network License Manager assigns a license to the workstation. A
product session then starts on the workstation, and the number of
available licenses on the license server is reduced by one.
when a user exits a product, the Network License Manager frees a
license for another user. If a user runs multiple sessions of an
Autodesk product on an individual workstation, only one license is
used. When the last session is closed, the license is freed.
three processes manage the distribution and availability of
License manager daemon (lmgrd.exe). Handles the
original contact with the application, and then passes the
connection to the vendor daemon. The lmgrd.exe daemon is used to communicate with the vendor
daemon only; lmgrd.exe does not authenticate
or dispense licenses, but rather passes user requests to the vendor
daemon. By using this approach, a single lmgrd.exe daemon can be used by multiple software
vendors to provide license authentication. The lmgrd.exe daemon starts and restarts the vendor daemons
Autodesk vendor daemon (adskflex.exe). Keeps track
of the licenses that are checked out and the workstations that are
using them. Each software vendor has a unique vendor daemon to
manage vendor-specific licensing. As its name implies, the
adskflex.exe vendor daemon is specific to
adskflex.exe vendor daemon terminates for any
reason, all users lose their licenses until lmgrd.exe restarts the vendor daemon or the problem
causing the termination is resolved.
License file. A text file that has
vendor-specific license information.