This tip will make your AutoCAD load faster on your computer.  - Open your explorer en go to C:\Program Files\Autodesk\AutoCAD 2013\ autocad.exe  (or C:\Program Files\Autodesk\AutoCAD 2012\ autocad.exe)  - Right-click on the autocad.exe icon and uncheck the "Enable/Disable Digital Signature” icon.  - Restart your computer   After restarting the computer you will load your AutoCAD program faster.   What happens when you disable this icon?  Applications of Autodesk loads a shell extension which determines if a file is digitally signed (displaying it with an icon). To determine whether a file is digitally signed, the shell extension looks into each drawing file before displaying it. If a folder contains many drawings, like your template folder, it will take longer to open.   Note: If you are using AutoCAD LT, the above steps may not work.   In that case, you can do the following steps:  - Use Windows Explorer and navigate to c:\winnt\systems32 or c:\windows\system32 (depends on WIN ...