I recently reinstalled my laptop completely (it is very nice Dell XPS M1330) and took that opportunity to make it into decent development machine (w/o all the stupid preinstalled applications).
Installed also Visual Studio 2005 and 2008, SQL 2005 Express and all the little tools necessary (ClipX for example).
Fired up latest web site on which I work on, F5 and … nothing – dreadfull message of “Internet Explorer cannot display the webpage”.
Ok, no panic here, let try Visual Studio 2008 with same web site; nothing Same site, on two other development machines (Vista & Vista 64) under VS 2005 and VS 2008 works w/o problem.
Started researching and debugging; it turns out that next generation protocol IPv6, or its implementation on Vista clashes with integrated web server WebDev.WebServer.exe; WebDev has a problem finding localhost address in default configuration.
Easy fix for this is to comment ::1 entry in hosts file:
No restart is needed, either of computer or Visual Studio.
(to edit hosts file you can use notepad started with elevated rigths or “Run as administrator“; in Open dialog you type in %windir%\System32\drivers\etc\hosts)