CODEWITHSUNDEEP
c#asp.net.netiis
kralco626
kralco626

Reputation: 8624

Failed to map the path '/'. .net 4.0

I have a .net app that I just opened on in visual studio 2010 and converted to 4.0 when it asked me on start-up. I go to try to build the site, and I get this error:

Failed to map the path '/'.

An unhandled exception was generated during the execution of the current web request. Information regarding the origin and location of the exception can be identified using the exception stack trace below. 

[InvalidOperationException: Failed to map the path '/'.]
   System.Web.Hosting.HostingEnvironment.MapPathActual(VirtualPath virtualPath, Boolean permitNull) +8804446
   System.Web.Hosting.HostingEnvironment.MapPathInternal(VirtualPath virtualPath) +42
   System.Web.VirtualPath.MapPathInternal() +4
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath, VirtualPath baseVirtualDir, Boolean allowCrossAppMapping) +107
   System.Web.HttpRequest.MapPath(VirtualPath virtualPath) +37
   System.Web.HttpServerUtility.MapPath(String path) +99
   NU.WorkManagement.Lookup.Lookups..ctor() +82
   NU.WorkManagement.Engine.GlobalModule.Init(HttpApplication application) +624
   System.Web.HttpApplication.InitModulesCommon() +80
   System.Web.HttpApplication.InitModules() +43
   System.Web.HttpApplication.InitInternal(HttpContext context, HttpApplicationState state, MethodInfo[] handlers) +828
   System.Web.HttpApplicationFactory.GetNormalApplicationInstance(HttpContext context) +304
   System.Web.HttpApplicationFactory.GetApplicationInstance(HttpContext context) +107
   System.Web.HttpRuntime.ProcessRequestInternal(HttpWorkerRequest wr) +327

I tried the most popular solution I found vis google (replace and ../ with ~/ but there wern't any...)

Update:

Lookups constructor:

public Lookups()
{           
    _dirPath = System.Web.HttpContext.Current.Server.MapPath("/") + _xmlPath;           
}

Upvotes: 20

Views: 42490

Answers (4)

Henrik Stenbæk
Henrik Stenbæk

Reputation: 4072

We had the same problem, IISRESET didn't do it. It turned out that the Virtual Directory we trying to map has a double backslash (d:\folder\\subfolder\) in the naming (IIS virtual directory was created with powershell script). Removing the extra backslash made HostingEnvironment.MapPath stop throwing exceptions.

Just in the case this could help somebody :-)

Upvotes: 4

tmaj
tmaj

Reputation: 34967

I know it's and old question, but for the record if you are running against IIS then

'iisreset' in the console may help resolving "Failed to map the path '/'." issue. I had this problem after renaming the sites in IIS.

Upvotes: 50

Greg Barth
Greg Barth

Reputation: 173

I was just trying to go through an exercise in a Microsoft Step By Step book and I hit this problem when trying to precompile an ASP.NET appliction.

Here's how I got past this - and it took me a day to figure out!

When you open the Visual Studio Command Prompt to do your build/precompile, you must right-click and choose "Run As Administrator".

That's all it took for me when trying to run this aspnet_compiler -v DeployThis C:\DeployThis -f -u

Upvotes: 12

Daniel A. White
Daniel A. White

Reputation: 190905

Try System.Web.HttpContext.Current.Server.MapPath("~/"). Notice the ~.

Upvotes: 5

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