Download File ac1st21.dll?

[Anonymous]

Hi There,

Trying to install Free Autodesk Architecture 2017. Installation went well, but when I try to fire it up, I get the message 'can't start because ac1st21.dll is missing'. Action suggested is to reinstall, but all installation are saying successful, therefore not allowing re-install unless I uninstall the whole thing and do it again? Any other solutions?

[Mark.Lancaster]

@Anonymous

Welcome to the community..

If you uninstall the product then you void the trial.  This issue could mean 2 things..

1.  Bad install and you can try to run a repair but if the dll is truly missing you can't uninstall/reinstall since its will void the trial.  At that point you will have to install on another machine.

2.  Open a command prompt and type PATH.   In there you should see numerous AutoCAD locations.   Do you see one called C:\Program Files\Common Files\Autodesk Shared?  If its there then go check that location, is that DLL file in there?

[Anonymous]

Hello,

I'm having the same error, and in Autodesk Shared there is the dll I'm missing. But AutoCAD is not running, should  I copy that file also somewhere else?

Thank you,

I

---

@Mark.Lancaster wrote:

@Anonymous

Welcome to the community..

If you uninstall the product then you void the trial.  This issue could mean 2 things..

1.  Bad install and you can try to run a repair but if the dll is truly missing you can't uninstall/reinstall since its will void the trial.  At that point you will have to install on another machine.

2.  Open a command prompt and type PATH.   In there you should see numerous AutoCAD locations.   Do you see one called C:\Program Files\Common Files\Autodesk Shared?  If its there then go check that location, is that DLL file in there?

---