All of a sudden a number of workstations of various types of hardware are unable to launch both AutoCAD2012/13 as well as Outlook 2010. CAD hangs on the loading splash screen and Outlook hangs on the processing window.
This only appears to be affecting our Windows 7 x64 machines, not Windows XP.
We are not sure why both apps are affected and the fixes we have applied are proving to be very unreliable in some instances.
We have narrowed it down to .net4 framework client profile and .net4 extended in a sense but this is a rather complicated scenario. A combination of uninstalling it, rebooting, reinstalling seems to temporarily resolve the issue but then after a while the problem comes back DESPITE us having blocked those updates we suspected from reinstalling which they don't.
Exporting the Registry for Autodesk found at HKey_Current_User\software when logged in as Domain Admin and then importing it when logged in as the user also seems to temporarily resolve the issue but then it comes back for some users.
System Restore also does not seem to be a permanent fix.
We are trying all kinds of other various things but does anyone here perhaps have any good leads or ideas on this issue? I'm thinking maybe a dll shared by Outlook and AutoCAD but where? What else could it be?
Please feel free to ask for any more info. Help would be much appreciated.