Community
I have only one little question.
Is AutoCAD LT 2013 compatible with Windows 8.1 ?
you can also do a simple search on here: http://forums.autodesk.com/t5/forums/searchpage/tab/message?filter=labels&q=windows+8.1%0D%0A&search...
Dean is right. You have to be careful with Microsoft because they are incorrectly stating that LT 2013 is compatible when it isn't. Like others on the site, I have voted that it is not compatible.
Your best bet might be to run in compatibility mode after SP2 has been installed.