AutoCAD 2008 Slow Startup Fix

You or your users may have noticed that AutoCAD occasionally takes a ***long*** time to start. Apparently there are a number of issues related to Autodesk’s communication modules. These are the modules which use your net connection to “phone home” to check for updates etc. Sometimes one of these will stop responding and freeze the system until they time out a minute or two later.
They can cause other error too, such as the “pure virtual function call” C runtime error.
Fortunately, there is an easy fix by editing the demand load registry key at
Change the LOADCTRLS value to 0 to disable demand loading.
More info from Owen Wengerd’s excellnt blog at


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