Permissions for running Asp.net Projects

I encountered a problem during the recent development. It took two days to finally solve the problem. I would like to summarize it for your reference.

I downloaded an Asp.net project from my mailbox to a local machine, created a virtual directory, opened it with vs, and ran debugging. An error occurred.
Then, open IE and enter the virtual directory. An error occurs when you do not have permission to access the folder.

The account ASPnet does not have the permission to execute the project folder. In the shortcut menu of my project folder
There is no security option (my system partition is NTFS, which is very strange), so this method still does not solve the problem.

Finally, I created a DOTNET folder on drive C and moved the project in. The problem was finally solved.