Windows 7 Support for AutoCAD and AutoCAD LT

Issue

You want to know if you can run AutoCAD® or AutoCAD LT® on Microsoft Windows® 7.

Solution

The 2010 and later versions of AutoCAD and AutoCAD LT (32-bit and 64-bit) are compatible with Microsoft Windows 7 and are fully supported by Autodesk.
Autodesk does not officially support 2009 and older versions of AutoCAD and AutoCAD LT on Windows 7. If you choose to run older versions of AutoCAD on the Windows 7 operating system, you may opt to use Windows compatibility mode.
There are some known minor limitations of AutoCAD 2010 and AutoCAD LT 2010 on Windows 7. 

If you use third-party add-ons to AutoCAD, check with their software manufacturers to discover whether they are compliant with Windows 7. You may also ask manufacturers of your printer/plotter, mouse, or digitizer whether you need to update your drivers for these devices.
If you migrate to Windows 7, Autodesk recommends that you reinstall your AutoCAD software. This will not cause any licensing problems, but will help ensure that your AutoCAD software runs properly. Moving to Windows 7 will not jeopardize your AutoCAD customizations. When you reinstall AutoCAD, simply move your customizations over to the new installation.
Note: For AutoCAD-based vertical products, please refer to the knowledge base for details on support and known issues with Windows 7.