Autodesk License Management

27 Oct, 2010 By: Robert Green

CAD Manager's Toolbox: This tip can help you manage license servers across multiple offices.

Reader Andrea Andreetti of DuctiSoft provided a great tip for managing multiple Autodesk license servers in various offices.

Find this key in the Windows registry:


You can now enter your FLEXlm port number using this format:

"Port number @ IP address" of the server where the FLEXlm is installed. (example 1234@123.456.789.0)

But you can also put in several numbers for your branch offices such as:

1234@ is your office in Halifax
1234@ is your office in Ottawa
1234@ is your office in Montreal

Which would look like this entered into the registry key:

1234@; 1234@; 1234@

The second server will take over if there are no more licenses available on the first one.

If you're familiar with AutoLISP, you can use the following code to achieve the same result:

(setq cadlic (vl-registry-read "HKEY_LOCAL_MACHINE\\SOFTWARE\\FLEXlm License Manager" "ADSKFLEX_LICENSE_FILE"))
(if (/= cadlic (setq iplic "1234@;1234@;1234@"))
(vl-registry-write "HKEY_LOCAL_MACHINE\\SOFTWARE\\FLEXlm License Manager" "ADSKFLEX_LICENSE_FILE" iplic))

Got a question or tip for the CAD Manager's Newsletter, like Andrea did? Send it to me at If I use your contribution in the newsletter, you'll receive a cool Cadalyst prize!


About the Author: Robert Green

Robert Green

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