Visual Modeler won't open with IE 5.5 and IE 6.0 security updates installed

Product/Release:Visual LANSA V9.1
Abstract:Internet Explorer and Security Update Q313675 will display a File Download Dialog Box when trying to start Visual Modeler
Submitted By:LANSA Technical Support


Microsoft have recently released Service Pack 1 (SP1) for Windows XP. Applying this service pack to Windows XP activates the (previously disabled) Open button on the File Download screen below. Clicking on the Open button allows Visio to open the Visual Modeler model. Prior to SP1, this open button was disabled, as described below.


In Visual LANSA, the Visual Modeler is started from the Development Environment from within the "Work with Files". If you have Microsoft Internet Explorer 5.5 or 6.0 installed as your browser and have applied the Security Update Q313675 (or one of the cumulative updates) you will receive the following File Download Dialog Box message when starting Visual Modeler.

File Download Dialog Box message


This behaviour is a Microsoft design and affects many applications, not just Visio (with its file extensions .vst and .vss). The details of this security design can be found on Microsoft's Web site. The following links gives more details on this design feature:

(This Microsoft article pertains to .RTF and .CSV file extensions but the same principle can be applied to .VST and .VSS and other file extensions)

Note: This issue is external to Visual LANSA. The same file download prompt can be generated by:

  1. Opening Visio 2002 and creating and saving a Visio 2002 template to your local drive eg. c:\temp\mydesign.vst.
  2. Open this .VST file via a HTML file in your IE 6.0 browser


LANSA development are currently investigating how to resolve this issue in the next version of Visual LANSA so that the Visual Modeler option can be used on PCs that have IE 5.5 and 6.0 with Security Update Q313675.

In the meantime, if you have IE 5.5 or 6.0 and have not applied the Security Update Q313675 or any of the cumulative updates then you won't be affected by this problem.

Note: Security Patch are applied automatically to IE 6.0 in Windows XP if you have set the Automatic Updates to download automatically.