why 'Downloading Excel files' failing in Production/UAT

Hi All,

I have a functionality to download excel file in a c#.net App(MVC).In my Local its downloading in the specified folder but when i deployed it is showing the error

Global Error Code :"Access to the path 'c:\myexcel.

I was trying to access C: folder downloads path of a specific user using Registry .I dont know this is the way to access or how can I access

I am creating file path dynamicaly..

string path = Registry.GetValue(@"HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders", "{374DE290-123F-4565-9164-39C4925E467B}", String.Empty).ToString();

How can I fix this issue ?How can i given a folder path accesible which i have to deploy in UAT Please help me on this