Error on ClickOnce install: Application download did not succeed. Check your network connection, or contact your system administrator or network service provider.

Error when trying to install ClickOnce application

Application download did not succeed. Check your network connection, or contact your system administrator or network service provider.

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[ClickOnce] Using the ClickOnce Publish Wizard on Windows Vista

The ClickOnce publishing Wizard on Windows Vista generates the following error message:

"Failed to connect to 'http://localhost/WindowsApplication1/' with the following error: Unable to create the Web 'http://localhost/WindowsApplication1/'.  The Web server does not appear to have the FrontPage server extensions installed."

To solve this you need to do two basic things (thanks to my thinktecture colleague Dominick Baier):

• Configure IIS to run in IIS6 Compatibility Mode.
• Run Visual Studio as an Administrator.

Read the whole story (at Brian Noyes' Blog).