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Riverbed: Working with remote AutoCAD files

Originally published Last updated 6 comments

AutoCAD is not tuned to perform particularly well in a WAN environment out of the box. This tip covers ways to make it respond faster in a networked environment. After central file services were implemented with Riverbed appliances, browsing for AutoCAD drawings in Windows Explorer became almost unusable. The files had previously been stored on a LAN-connected file server before being migrated.

Autodesk’s Explorer shell extension

Since Autodesk included the ability to add digital signatures to drawings, they've also included an Explorer shell extension that allows Explorer to display signed .DWG files with a different icon than unsigned .DWG files. When Explorer lists .DWG files in a folder, it has to examine each file to determine whether or not it is signed and then display the correct icon. This takes time. On your local workstation's folders the extra time is insignificant; however on a LAN the lag is noticeable, and across the WAN the lag can be crippling. The Explorer lag occurs in AutoCAD File Dialogs as well as just plain Explorer.

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By default this shell extension is installed and enabled with any Autodesk product.

To disable it:

  1. Right-click on any .DWG file and choose "Enable/Disable Digital Signature Icons" from the menu.
  2. In the Signature Validation Options dialog uncheck the "Validate digital signatures and display special icons" check box.
  3. Click OK and reboot.

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Any AutoCAD product install or update will re-enable this shell extension, so you may need to repeat these steps. Whenever browsing becomes slow, check this setting.

Disabling the digital signature icon display does not invalidate a drawing's digital signature. End users are still notified on Open that they're opening a signed drawing.

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6 comments

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