Windows 10, Windows 7, Windows 8 and Windows 8.1 users (32bit and 64bit) – If you are encountering Autodesk licensing issues such as blank Authorization code (authcode) screens or even crashing on startup with messages like “Verifying license…” then “AutoCAD has stopped responding” when launching AutoCAD, it could be caused by:
NOTE: If you are primarily seeing script errors, then first check out how to enable scripting support in IE 11
Here is a list of AutoCAD versions (and other similarly labeled Autodesk products too) that most likely will be affected…
Windows Security Update KB2962872
This update can causes all Autodesk products to crash on licensing verification specifically when using these newer versions of Microsoft Internet Explorer
You can very easily uninstall KB2962872 using these short steps:
If the KB2962872 doesn’t solve the problem, these KB’s may also affect your system – KB2943357, KB2977629 and KB2976627
Apparently, this is no longer relevant – Another reason is that because you have Microsoft Internet Explorer 11 installed on your system. The solution is to rollback to Microsoft Internet Explorer 10, or maybe back as far as Internet Explorer 8
Failing that, I did find this link on the Autodesk website regarding ‘Script Errors in AutoCAD activation‘ – perhaps it helps somehow. If that fails, and you haven’t yet tried it – Try simply installing the latest version of Internet Explorer 11 from here – EIE11_EN-US_MCM_WIN764.EXE
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THANK YOU!!! Too bad I uninstalled my autocad 2008. Even after re-installing it crashed.