topic Re: licence error in Previous Version Support Forum

licence error

tahar_mazi — Thu, 20 Mar 2025 10:36:17 GMT

Hello,

my autocad get a licence error any time i launch it. (see attach files)

i already tried the solution on this link https://www.autodesk.com/support/technical/article/caas/sfdcarticles/sfdcarticles/AutoCAD-2017-fails-to-launch-after-install.html

the assistance told me to try this

https://knowledge.autodesk.com/article/The-License-manager-is-not-functioning-or-is-improperly-installed-AutoCAD-will-shut-down-now-ADLSDK-STATUS-AUTH-PENDING-xx-The-Product-key-was-not-found but i can't download autocad 2018 on the web site so they asked me to post here.

thanks in advance for your help.

Re: licence error

pendean — Thu, 20 Mar 2025 12:48:37 GMT

Is this a new PC?

Is that Windows11?

Re: licence error

tahar_mazi — Thu, 20 Mar 2025 12:54:12 GMT

hello no it's not a new PC but yes it's running on windows 11

autocad was running good untill monday.

Re: licence error

pendean — Thu, 20 Mar 2025 21:49:27 GMT

So what changed on your system before Monday? Something did, and that is the culprit. Try removing it.

NOTE: old AutoCAD2018 is not supported in Win11: any updates that OS installs can break the old program. There is never going to be a fix from Autodesk.

See if any free and not-so-free tips here can help you out too

https://blog.longbowsoftware.com/category/autocad/autocad-2018/

Do you have the 2018.1.2 Update installed? It may help to get it if you don't have it, your 2018 ABOUT command will confirm. But Autodesk does not host those old updates anymore, did you save a copy for your use years ago? You might be able to find it on the web somewhere.