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CAD tip CAD tip # 10081:

Question CAD 
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Q - question

How to reserve a floating license to a specific PC?

A - answer If you want to reserve (block) a specific license of a CAD application from your Autodesk license server FlexLM/FlexNet for a particular user or a user group, use the option "RESERVE".

In the license folder on your license server, create or edit the text file ADSKFLEX.OPT. Using Notepad.exe, add the reservation lines into this file - e.g.:

RESERVE 1 86295ACD_2015_0F HOST HP_Workstation_D18

Or you can limit access to licenses from specific machines - e.g.:

EXCLUDE 86296PLNT3D_2015_0F INTERNET 192.168.0.*
MAX 3 86268PDSU_2015_0F INTERNET 192.168.0.*
EXCLUDE_BORROW 86268PDSU_2015_0F INTERNET 192.168.0.*

In the above examples, 1 license of AutoCAD 2015 is reserved for the computer with network name "HP_Workstation_D18", and 1 license of Inventor 2015 is reserved for the machine with IP address "". Using any licenses of Plant 3D 2015 is excluded from workstations with IP addresses starting with "192.168.0." and using licenses of Product Design Suite Ultimate 2015 from these machines is limited to maximum 3 (concurrently), and at the same time these licenses can't be borrowed from these machines. You need to restart the license service after you edit the OPT file.

NLM Feature codes of the individual CAD products can be found on the page Products and on

100% *  CAD 
5.11.2014    6276×  

See also:
Tip 13844:With which subscriptions do I get Autodesk Drive cloud storage as a bonus?
Tip 13402:Which products and features can I use for free with Flex Token licensing?
Tip 8977:How to reserve an Autodesk floating license for a user or group?
Tip 5731:Online statistics reports about active network licenses of CAD software.
Tip 5665:Verbose listing of FlexLM errors.

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