Upgraded from Win8 to Win8.1

[D2BGR8]

I had installed AutoCAD14 on my Win8 PC and it worked fine. Then I upgraded the operating Sys to Win8.1 and then hell broke loose. The AutoCAD will not work anymore. I did a clean reinstall, received a congratulatory message, but the program will not run. The message I get says "The security system (softlock manager) is not functioning or is improperly installed" What should I do to resolve this problem? Please advise.

[TravisNave]

Upgrading the OS on a production machine is always a bad idea.  Your licensing is broken.  Have you applied SP1?  If that doesn't fix it, you're going to have to do a clean uninstall of the product, including its license service.  Then reinstall and then apply the latest service pack that makes it compatible with 8.1.

Good Luck!

[DarrenP]

if this doesn't work you need to restore back to windows 8 when it was working

[D2BGR8]

What do you mean by restoring back to Win8? Undo the upgrade to Win8.1?

Does that mean AutoCAD2014 is not compatible with Win8.1? 

[DarrenP]

system requirements: http://usa.autodesk.com/adsk/servlet/ps/dl/item?siteID=123112&id=15412189&linkID=9240617
windows 8.1 issues: http://forums.autodesk.com/t5/forums/searchpage/tab/message?filter=labels&q=windows+8.1&search_submi...

[pendean]

"Upgrading the OS on a production machine is always a bad idea."
Always check before you do something like this, it's the wisest to never 'assume' it will be fine.