topic Authorization Error Login failed. Error -551 in AutoCAD Forum

Authorization Error Login failed. Error -551

Moshe-A — Wed, 25 Jan 2017 15:25:09 GMT

Hi Guys,

Have a machine (win7/64 pro) joined to domain (sbs2011) installed with AutoCAD 2015 + AutoCAD 2016

early this week i gave this machine to other user, disconnect it from the domain and rejoined it with the

the other user profile

since then the user complains: he opens his dwg files getting Authorization error (see the pic)

i would like to mention that before, this machine was working prefectly

when disconnecting to machne from the domain, the error is vanish

workaround?

thanks in advace

Moshe

Re: Authorization Error Login failed. Error -551

john.vellek — Thu, 26 Jan 2017 16:09:31 GMT

Hi @Moshe-A,

If removing the computer from the Domain fixes the problem, then there is likely an issue with the domain user profile licensing.

I suggest clearing the license date using the following steps;

On your computer logged on as the Domain User with full local Admin permissions), navigate to: C:\ProgramData\Autodesk\CLM\LGS\<product key>_<<product version>>\
Delete the LGS.data file.
Navigate to C:\Users\<username>\AppData\Roaming\Autodesk\
Delete the ADUT folder and it's contents
Start the application.

Please select the Accept as Solution button if my post solves your issue or answers your question.

Re: Authorization Error Login failed. Error -551

john.vellek — Fri, 27 Jan 2017 22:21:16 GMT

Hi @Moshe-A,

I am checking back to see if my post helped you with your problem or if you need additional assistance or information. Please add a post with how you decide to proceed and your results so other Community members may benefit.
Please hit the Accept as Solution button if my post fully solves your issue or answers your question.