Local IIS failed to map the path ‘/’

Got an exception of System.InvalidOperationException: “Failed to map the path ‘/'” when starting the site on a local IIS.

System.Web.HttpRuntime.HostingInit(HostingEnvironmentFlags hostingFlags, PolicyLevel policyLevel, Exception appDomainCreationException) +556

[HttpException (0x80004005): Det gick inte att mappa sökvägen /.]
System.Web.HttpRuntime.FirstRequestInit(HttpContext context) +579
System.Web.HttpRuntime.EnsureFirstRequestInit(HttpContext context) +118
System.Web.HttpRuntime.ProcessRequestNotificationPrivate(IIS7WorkerRequest wr, HttpContext context) +730

With my modest knowledge about hosting a site on a local IIS the solution turned out to be really simple.

1. Start a new command prompt in administrator mode.
2. Run command: “iisreset”