ASP.NET is not authorized to access the requested resource when accessing temp folder

Question

my application that I have created using ASP.NET and C# uses a temporary path to store a document whilst it is read, and then deletes it after:

string path = string.Concat((Server.MapPath("~/temp/" + FileUpload1.FileName)));

Array.ForEach(Directory.GetFiles((Server.MapPath("~/temp/"))), File.Delete);

Thankyou for any help. The StockControl document is an example and could be imported from multiple computers on a network. based on the error message it looks like my file is not being uploaded and saved into the temp directory...

local path when debugging (WORKS):

C:\Users\USER\Documents\Visual Studio 2013\Projects\WebApplication5\WebApplication5\temp

the application is successfully deployed however when i attach the file and press "Import", i get displayed an error message: Access to the path 'C:\inetpub\wwwroot\StockControl\temp\Book1.xls' 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:\inetpub\wwwroot\StockControl\temp\Book1.xls' 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.

Source Error:

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.

Answer 1

I have the same issue.

Made the following changes to fix the issue.

(1) I have gone to wwwroot folder. Right-click and security tab. Provided IISUSER to set read and write permission to the wwwroot folder.

(2) Changed the application pool to the separate pool and set identity to Application pool Identity.

Answer 2

a really simple fix to solve my issue, in IIS I had to right click on Application Pools and set .NET Framework V4 to Integrated rather than classic/

Another solution was to set the specific folder that was being accessed to read/write to the users that required it, this can be done by unique users or within an organization, a group of users