"Internet Explorer cannot display the webpage" when using Cassini on Windows Vista

roger's picture
Submitted by roger on Sun, 2009-03-29 09:08

I was doing some ASP.NET MVC this weekend, and I couldn't get the project to start: all I got was "Internet Explorer cannot display the webpage", when using Visual Studio's built-in development web server (Cassini).

I think it's because Cassini doesn't support IPv6, and on Vista, "localhost" refers to the IPv6 address ::1, rather than the IPv4 address 127.0.0.1.

If you use http://127.0.0.1:12345/Home/, then it works fine.

To resolve this, you can go to the project settings and set the Start URL explicitly.

Comments

Thank-you, sir, saved me a

Submitted by Pablo (not verified) on Sat, 2009-11-14 21:19.
Thank-you, sir, saved me a bunch of time and head-scratching!

Yes...

Submitted by Eric Lawrence (not verified) on Sat, 2010-11-13 21:43.
Yes, that's a good workaround, but this was nevertheless a bug in IE9 that is fixed in later builds. Thanks!

Re: Yes...

Submitted by roger on Wed, 2010-12-29 10:03.
Actually, it's an implementation detail of Vista's IPv6 stack. I'm glad that later builds of IE9 work for you, though.

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