Background
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During the creation of  the recent service pack for Architectural and Civil products based on AutoCAD, Autodesk worked with Microsoft to arrive at a solution for a .NET issue that caused some systems to hang during startup. This problem was caused by the method used to load the digitally-signed libraries. 

The solution to this issue was to force the Microsoft Internet Library to load before any Autodesk modules by facilitating an early call to a known URL. However, in some network configurations, this call caused an excessive delay in the launch of the program.

To correct this issue, it is strongly recommended that you apply this hotfix. 


Installation Instructions
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To apply the hotfix, you will first need to update the AecLoader47.arx file. This file is located in the program install directory. To update the file, rename the existing AecLoader47.arx file, and then copy the hotfix version to the same directory.  

You will also need to run LoadLockFix*.reg of your product language to make the necessary changes to the registry. 


Description of Changes
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After the hotfix is installed, you will be able to

1) Disable or enable the early call to a known URL.
2) Modify the URL used to force the Microsoft Internet Library to load.

The following values were created in the registry:

InetLoader
  Set to dword:00000000 to turn off the load check (this is the setting in LoadLockFix.reg). 
  Set to dword:00000001 to enable the load check if the digital signature problem occurs. 

InetURL
  Used when InetLoader is set to 1.
  By default, we use http://www.autodesk.com. This can be changed to an internal (permitted) URL should the loader lock issue occur. 
  The .reg file references http://www.verisign.com, but this reference can be changed to any valid http URL. A file URL should not be used because it may not load the required Microsoft Library.