"Access Is Denied" Error is Thrown When Trying To Create A New Directory

I have a requirement to search for the existence of a directory (a specifice Company Name) that is beneath the application root. (C:\inetpub\wwwroot\MyWebApp\Documents\"CompanyName") and create it if it does not already exist. Where "CompanyName is the value held in the session variable, Session("curUser.nFacilityUid")

I'm using the following code to check for the existence (and creation, if necessary) of a directory, but an execption is thrown each time I attempt to create a directory. The error message states "Access to the path "c:inetpubwwwrootmywebappdocuments@companyname is denied". Would anyone be able to help me understand what is going on?

I have the following set in my web.config file:
<authentication mode="None" /> 

Dim strPath As String
'Session("curUser.nFacilityUid") is the name of the directory
strPath = Server.MapPath("\MyWebApp\Documents\" & Session("curUser.nFacilityUid"))

Dim dir As New DirectoryInfo(strPath)

If dir.Exists Then
'List it's contents



    'Create the directory

    Catch ex As Exception

    End Try

End If


9/25/2005 9:17:13 PM
asp.net.security 27051 articles. 1 followers. Follow

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You need to grant the ASPNET local account write access (Windows
Explorer, Right-Click, Properties, Security...) to your
MyWebApp\Documents directory.

If you are using IIS 6.0, you need to grant write rights to that directory for the IIS_WPG local account group.

Hope that helps,

Wim Hollebrandse
9/25/2005 9:53:41 PM


Thanks for your reply. I am running IIS 6.0 and Windows XP Pro on my workstation. I have two questions, though.

1) When I attempt to grant the ASPNET local account write access to MyWebApp\Documents directory by right-clicking on the Documents folder, my properties dialog box contains four tabs:

Web Sharing

The only options I have on the Sharing tab are "Local Sharing and Security", "Network Sharing and Security", and the link "View your Windows Firewall Settings".

I can't seem to discover where to grant my ASPNET local account write access. If I check "Share this folder on the network" and check "Allow Network Users to Change My Files" I am able to create a directory (but I don't think I want to share this folder on the network, do I?). Is this what you were talking about?

2) Where might I grant write rights to the Documents directory for the IIS_WPG local account group? I have the following tabs available to me when I open IIS, right-click on the Documents directory under my web application directory:
Directory Security
HTTP Headers
Custom Errors

When I click the "Edit" button in the Directory Security tab, the "Authentication Methods" dialog has "Anonymous access" checked and the account listed in the "User Name" text box is IUSR_ASPNET and "Allow IIS to control password" is checked. Is this what you were talking about regarding the granting of rights to the Documents directory?

Any inputs are greatly appreciated.


9/26/2005 6:56:22 PM

If you're running Windows XP Pro, you can't be running IIS 6.0, you'll be running IIS 5.1.

You need to enable the security tab in Windows XP Pro first. It's disabled by default. To enable it, open any Windows Explorer window, go to Tools, Folder Options, View, and in the list of Advanced Settings untick 'Use Simple File Sharing'.

Now, simply go to the Properties of your folder MyWebApp\Documents in Windows Explorer, and add the ASPNET local account and grant the account write permissions to your directory.

That's all there is to it. No need to configure anything in IIS.

Hope that helps.

Wim Hollebrandse
9/26/2005 9:30:40 PM

Many thanks! You have solved my problem. I can now write to my "Documents" directory from my web application.

My mistake on my version of IIS (sorry about that). You are correct, I am running IIS 5.1. 

9/26/2005 10:46:41 PM

Cor. I wish it were that easy! I'm not trying to make directories or files, just reading them would be grand!!

I have set ASPNET machine account to both the web application directory and virtual host webservice but have been consistently getting a 401 error with the following Stack Trace output:

[WebException: The request failed with HTTP status 401: Unauthorized.]
   System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall) +1304
   System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters) +218
   LPGOpsWeb.ViewOrdersUnprocessed.btnRefresh_Click(Object sender, EventArgs e)
   System.Web.UI.WebControls.Button.OnClick(EventArgs e) +108
   System.Web.UI.WebControls.Button.System.Web.UI.IPostBackEventHandler.RaisePostBackEvent(String eventArgument) +57
   System.Web.UI.Page.RaisePostBackEvent(IPostBackEventHandler sourceControl, String eventArgument) +18
   System.Web.UI.Page.RaisePostBackEvent(NameValueCollection postData) +33
   System.Web.UI.Page.ProcessRequestMain() +1292

I figured at first that the .net account needed permissions on the webapp dir, but nothing I am doing in regards to permissions both on IIS webservices and application directories appears to be making any difference? I just can't get the data to show up...Thoughts anyone?

9/27/2005 11:59:19 PM

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