How can I solve 'Access Denied' with ASP and Windows 7? - asp.net-mvc-3

Question

I’m trying to save a file like this:
FileStream file =
new FileStream(“C:\\temp”, FileMode.Create, System.IO.FileAccess.Write);
Byte[] bytes = new byte[file.Length];
File.Read(bytes, 0, (int)file.Length);
File.Write(bytes, 0, bytes.Length);
File.Close();
File.Close();
I then get this error:
Access to the path ‘C:\temp’ is denied. Description: An unhandled
exception occurred during the execution of the current web request.
Please review the stack trace for more information about the error and
where it originated in the code.
Exception Details: System.UnauthorizedAccessException: Access to the
path ‘C:\temp’ is denied.
ASP.NET is not authorized to access the requested resource. Consider
granting access rights to the resource to the ASP.NET request
identity. ASP.NET has a base process identity (typically
{MACHINE}\ASPNET on IIS 5 or Network Service on IIS 6 and IIS 7, and
the configured application pool identity on IIS 7.5) that is used if
the application is not impersonating. If the application is
impersonating via , the identity will be
the anonymous user (typically IUSR_MACHINENAME) or the authenticated
request user. To grant ASP.NET access to a file, right-click the
file in File Explorer, choose “Properties” and select the Security
tab. Click “Add” to add the appropriate user or group. Highlight the
ASP.NET account, and check the boxes for the desired access.
I’ve done this on both my Windows 7 and Windows 8 machines and got the same error message. I’ve changed the administrator role on the pc, given full control to all users, removed the ‘Read Only’ attribute from the file and still got the same error. I even tried using a thumb drive.
I also noticed that after removing the ‘Read-Only’ attribute from the file, it always returns as if the setting did not take.
I also tried this fix with the Windows 7 machine: http://fixmywin.com/fix-windows-7-access-denied-error-and-permission-ownership-problem/...but still the same errors. I gave up after about fie hours with this problem. How can I fix this?
Thanks for any help!

Answer 1

Look in IIS at the ApplicationPool the site is running under, select "Advanced Settings" and find the user the App Pool is using. This will typically be "NETWORK SERVICE" unless you have specifically changed it. Then, right click on the folder c:\temp >> Properties >> Security and add "NETWORK SERVICE" (or other user) with "Modify", "Full Control" or the appropriate permissions for your app.