I developed a simple web application. A label and a button. On click of Button, the label will display Hello World. When I deploy this web application on my web server and access the URL, I get this error message. The current identity (NT Authority/Network Service) does not have write access to C:\Windows\Microsoft.NET\Framework\v2.0.50727\Temporary ASP.NET Files\ I have tried the following - Navigate to C:\Windows\Microsoft.NET\Framework\v2.0.50727 and typed the following command - aspnet_regiis -ga "NT Authority\Network Service" After that also, it did not work. We checked the permissions of the folder Temporary ASP.NET Files and for the Network Service user, we checked the Security Permissions and it has all the permissions as required.