Ideagen Internal Audit (Aura)'s ClickOnce landing page displays a large button that the user clicks to begin the install. 

In earlier versions of the application this page contained JavaScript which changed the button's link such that it was possible to click through to the ClickOnce package or optionally a setup file called VisionSetup.exe.

Recent changes in Microsoft Edge mean that older versions of the landing page might direct the user straight to VisionSetup.exe when they click the button.  This file does not normally exist, and so the user sees a 404 error when they click the button.

The following workaround may work, depending on your settings:

• In Edge, click on the settings menu button
• Select 'Reload in Internet Explorer mode'
• After the page is reloaded, click on the install button

If using IE mode does not work, an alternative is to hyperlink directly to the ClickOnce install file vision.application.  This is found in the ClickOnce install folder, so the URL will be e.g.

http://server.domain.com/[pentana instance]/Client/vision.application

or

http://server.domain.com/[pentana instance]/VisionDeploy/vision.application