I've deployed a very simple MVC3 RC app to an IIS 6 + Windows 2003 server. I'm just getting a "403 forbidden" error when trying to accesss the root. Right now the app is only one page, so there are no others to try out.
I noticed there is no longer a default.aspx in the root to handle default requests, could this maybe be the problem? Or is there some special config needed for IIS 6?
It depends. If you are using extensionless routes then yes there's a special config.
I've just deployed an MVC3 RC app on IIS6.0+win2003 server recently,
To get the route works correct ,all your should do is to intall .net framework4.0. see this blog post from Haacked: http://haacked.com/archive/2010/12/22/asp-net-mvc-3-extensionless-urls-on-iis-6.aspx
Must read: http://haacked.com/archive/2010/12/22/asp-net-mvc-3-extensionless-urls-on-iis-6.aspx
Also, I installed Webmatrix via Web Platform Installer just to make sure that I had all that I needed. Went through 2 reboots and voila~
I had the same problem with Windows Server 2003 IIS6 running a MVC4 app for the first time - in the end a .NET 4 repair (I downloaded the dotNetFx40_Full_x86_x64.exe file from Microsoft and executed it) did the trick!
Recently I again had the same problem on a rebuilt server and this time I had forgotten to check Web Service Extensions (bottom "folder" in IIS6) and found that ASP.NET v4 was Prohibited. I changed it to allowed, restarted IIS Admin Service from Services and it started working.
来源：https://stackoverflow.com/questions/4186695/mvc3-rc-app-deployed-on-iis-6-giving-403-forbidden-error