Installation & Licensing

Posts: 11
Registered: ‎03-13-2007
Message 1 of 2 (551 Views)

Error 20

551 Views, 1 Replies
11-14-2011 08:00 AM

I have several autodesk products installed on my computer, all 2012, and none will run.  They all ran when installed them a while back but now they all give me licensing errors.  How do I get around these problems and what is causing this?

the products are:

Autocad mechanical 2012, 

3Ds Max 2012,

Inventor 2012, maya 2012,

Mudbox 2012.

Revit Acchitecture 2012.

and several more smaller programs

Community Manager
Posts: 2,229
Registered: ‎09-27-2011
Message 2 of 2 (543 Views)

Re: Error 20

11-14-2011 11:08 AM in reply to: rickcarufel

Hi Rick,


Looking through the Discussion Forums, I was able to find a couple of relevant threads that might be a good starting point. 




As Licensing is almost the same for most Autodesk products.


You can also try to add license service exe(C:\Program Files\Common Files\Macrovision Shared\FLEXnet Publisher\FNPLicensingService64.exe) to DEP exceptions (


Close the application, then delete the casecadeinfo.cas file located in the following directory and try running again:

Windows 7:


Windows XP:

C:\Documents and Settings\All Users\Application Data\Autodesk\AdLM\


Another user posted that a system restore resolved their issue.


Please let me know if any of this helps.

Philip Schmelzer

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