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"Access to the path 'D:\\Windows\\system32\\file is denied" Azure Web App

I have a specific function that utilizes IronPython and inside the python code it is accessing the current directory and creating a temporary file. When it later tries to access that file based off the relative directory path it cant get it and I receive an error back from IronPython that states
"Access to the path 'D:\Windows\system32\file is denied" ('file' being the unique temp file created). This all works when I run VS locally as a administrator. If i'm running it locally not as a administrator I receive the same error. When I publish the application to a app service on Azure it gives me the access denied error.
Thank you very much ahead of time and let me know if you have any additional questions.

D:\Windows\system32\file is denied
It is as designed on the Azure WebApp. Azure Web Apps (as well as Mobile App/Services, WebJobs and Functions) run in a sandbox. Applications are highly restricted. If we want to get more info about WebApp, please refer to Azure Web App sandbox.
Home directory access (d:\home)
Every Azure Web App has a home directory stored/backed by Azure Storage. This network share is where applications store their content. This directory is available for the sandbox with read/write access.
As a convenience for our customers, the sandbox implements a dynamic symbolic link in kernel mode which maps d:\home to the customer home directory. This is done to remove the need of the customer to keep referencing their own network share path when accessing the site. No matter where the site runs, or how many sites run on a VM, each can access their home directory using d:\home.
Local directory access (d:\local)
Every Azure Web App has a local directory which is temporary and is deleted when the run is no longer running on the VM. This directory is a place to store temporary data for the application. The sandbox implements a dynamic symbolic link which maps d:\local to point to this directory. The application naturally has read/write access to this directory.
Note that the d:\local folder in the scm site (where Kudu runs) is not the same as the one in the main site (where the web app runs). As a result, they cannot see each other's local files.

I wouldn't write stuff to C:\Windows\system32 as those are operating system files. I would feel more comfortable writing to the local temp directory for whatever user you are running the program as:
%USERPROFILE%\AppData\Local\Temp

Access mapped drive by IIS running asp.net mvc web application

I have deployed an asp.net mvc web application on IIS 8 server inside an virtual machine (Windows server 2012 R2).
An azure file storage is mapped as network drive in this virtual machine Windows server 2012 R2.
Now my asp.net mvc web application needs to read the files and folders of this mapped drive by C# System.IO code. By default IIS is not allowed to access mapped drives.
That's why the web application is throwing System.IO exception
"Could not find the specified path Z:\"
. I also tried to pass "\\\\{storage-name}.file.core.windows.net\\{fileshare-name}
but still no success.
Can some one guide me with correct configurations and settings which I should do inside IIS and web application?

Finally, I succeeded to access the mapped network drive through IIS Server.
I performed following steps.
Create a new user account on VM.
The user name for this new account will be the Storage Account Name
The password for this user will be Storage account key which ends with "=="
After creating this new user account I changed the account type for this user to Administrator
Go to My Computer OR This PC
Attach the network drive with the help of Map network drive.. option.
Open IIS Manager window, go to Application Pools
Select the application pool which is being used by your web application (in my case it was DefaultAppPool and click on Advanced Settings... from right side pane.
Change the Identity for this application pool with newly created user account name and password.
Set Load User Profile to true.
Click OK to save changes.
Click on Recycle link from right side pane to refresh the selected application pool.
Now select your web application which is under Default We Site.
Click on Basic Settings... to open Edit Site dialog box.
Make sure that the Application Pool name is correct.
Click on Connect as... button and select Specific user radio button and then set the credentials with this newly created User name (Storage account name) and password (Storage account key).
That's it. Now you can simply write standard C# IO code to access the directory and files of mapped drive. Here is a sample example.
var allDirs = Directory.GetDirectories("\\\\<storageaccountname>.file.core.windows.net\\<storagefileshare>");
ViewBag.Items = allDirs;
Make sure that you access the files and folders by UNC path format only, just like I have done in above code.

Access network folder from hosted website

I have developed one web application in c#(asp.net) and hosted in a server(say Server1). The application want the read and write access to a folder located in another server(network path) say server2. I can open the folder from server1 in windows explorer by typing the network path. But in application no access error is occurring(System.Unauthorisedexception). I dont know what access to which user I want to provide? Please help me.

Run your web application under an account that can access the folder on server2. Change the Identity of the Application Pool; more details at https://technet.microsoft.com/en-us/library/cc771170(v=ws.10).aspx.

Issue while opening local folder from ASP.NET web application

I have built an intranet web-application that is only used inside the company - so security issues do not matter . where we have a link in a web-application that should access a local directory on the local filesystem. When we pass parameter link a windows explorer instance should open with given a directory open.Is there anything i need to do with IIS?
System.Diagnostics.Process.Start("explorer.exe",#"c:\teste");

If you do that you'll be trying to spawn an explorer process on the server hosting the web application.
Do you just want to link to a path on the users local machine or at a network location?
Link to a file share through an anchor tag

Open local directory from ASP.NET MVC 3 Intranet application

I would like to know if it is possible to open a directory from intranet MVC application ? I have been searching about it but i don't found anything.
I tried to open from javascript using window.open('url') but i get unauthorized access.
Thanks,
Tiago Mourão

IMPOSSIBLE !!!
web browsers does not have allow web pages to access to disk drives.
web pages only can read/write cookies.
FileUpload control allow access to the files, only with user action(scripts no allowed).

I found a way to do resolve this problem. If you create a background process using Process.Start('location'), the application opens directory folder.

Tips:
Process.Start() generally used in windows application and if used in
web applications, a process will start on server(not on user agent
that run current page).
you get unauthorized access error, because of IUser has limited
access ...
1) Web Applications can read/write any file and folders on server side with assigning permission.
2) WebApplication with Some sideway can access to file & folders in web pages (client side) !!!
with JavaScripts:
Write a browser add-on with requested functionality, then install on
user agent(browser).
now with call method/function in add-on, you can do the operations
that does not allowed with JavaScript & etc.
with VBScript(Obsoleted) that run/supported only in MsIE:
can using FileSystemObject to full access files and folders.
can using CreateObject to create instance of each object in OS and
working with it.
Finally my answer is IMPOSSIBLE.