Autodesk Inventor already ran like (insert curseword here) due to some problem with my MSI gt60 2oc-022us and now after updating to windows 8.1 it can't even open. I also can't even play Battlefield 3 because punkbuster won't let me online now for some odd reason after the update?... Any of you computer wizards know about these problems with windows 8.1 update?
Btw the error code that pops up when I try to open Inventor is 0xC0000142
It is a known issue (see the following thread) and they have already or soon will have a patch for Inventor 2014 (as indicated in the thread).
On the other hand, if you are using an older version of Inventor you may be out of luck.
HTH