AutoCAD lost the Ribbon

[clshade]

Wondering if one had been run by chance.
If so a System Restore to last week might fix the issue.

[stephan.villeneuve]

In our Firm, one user had this problem with Revit Structure 2012 but I installed the "Update 2", the last version, and it appears all is OK now.

Is it the same for your AutoCAD, is it also an update to make?

[kct]

I didn't read the whole post but I know there is a command _ribbon that might help, too.