Recently I have upgraded my Windows 8 OS to 8.1. Before it, AutoCAD 2014 was working fine, without problems. But once the Windows upgrade was finished it is impossible to run AutoCAD. When in loading screen, AutoCAD crashes. Does "AutoCAD Service Pack 1" or "Model Documentation Hotfix for 64-bit Windows 8.1" solve my problem? If not, there is any hotfix or AutoCAD upgrade to improve compatibility between AutoCAD 2014 and Windows 8.1? I have spent for hours looking for help in Autodesk web unsuccessfully.
Thanks for all.
I have AutoCAD 2014 running on Windows 8.1 x64 without any problems, but I didn't upgrade from 8, it was a full 8.1 install on a system from scratch, so If you can set up a system from scratch I list steps below.
There are specifics you need to perform to get this running else AutoCAD installer fails and this is documented by Autodesk somewhere.
1. Fresh install of 8.1 x64 (not upgrade).
2. In Windows Control Panel 'Programs and Features' uninstall 'Microsoft Visual C++ 2008 Redistributable'
3. Download and Install .Net 3.5 Framework for 8.1 (right click run as admin) file = dotNetFx35_W8.1_x64.exe
4. Install AutoCAD 2014
I have reinstalled completely AutoCAD 2014 from the web. There was no problem with the download and installing. But when I ran it for the first time, AutoCAD didn't starts correctly. Before any license requirement it show me the message in the picture.
"El sistema de seguridad ( administrador de licencias con bloqueo mediante sofware) no funciona o está instalado de forma incorrecta"
" Security sistem ( license with software lock admin ) does not work or it was not installed fine"
What does it mean? For which security sistem is AutoCAD asking me?
Thanks for all.
The reason for this, is that the AutoCAD 2014 installer has an older version of the "Microsoft Visual C++ 2008 Redistributable" framework than the one Windows 8.1 installs. So for new installs, of AutoCAD on Windows 8.1 the installer fails, but for systems with Windows 8 and an existing AutoCAD install which is then upgraded to Windows 8.1, AutoCAD will not run due to these errors. So the solution was, to uninstall the newer "Microsoft Visual C++ 2008 Redistributable" from Windows 8.1, install AutoCAD to let it install its own older version of the framework, then later after AutoCAD is running, install the newer "Microsoft Visual C++ 2008 Redistributable" framework that I posted.
I documented only the steps to install successfully but I didn't save the link to the document Autodesk made which explains the situation and I can't seem to find it anywhere at this point. If I find time and locate it i'll edit my first post to include it.
Oh, it seems I can't edit a previous post of mine that's been replied to.
I'm not 100% certain this is the exact document but it's details are the same.
Okay - I've tried unloading, reloading, service packs etc etc. But after upgrading from windows 8 to 8.1 my Acad LT 2013 still won't work!!! I am now willing to by a new copy of Acad just so I can get my business running again. What do I buy? What version of ACAD LT works with windows 8.1????
Different issue now which kind of changes things. I can load Acad LT 2013 using Windows 8.1 but when loading it brings me to an activation page. It won't let me activate and says I have an invalid serial number. I have a legal version of the software and have entered all numbers correctly but it won' t activate license. It allows me to run software as in evaluation mode and it work so win 8.1 isn't the issue.
In short - whats wrong with my serial number and how do I activate as I now only have 7 days before evaluation mode runs out.
This is really annoying!!!
I had the same problem. My ultimate Solutuion:
Update your Graphic card driver. For win 8.1 you are in need of new Driver for your hardware. Maybe all hardware drivers
It works now
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