ASP. NET access to the path is denied

This problem occurs when I transplanted something I wrote to another machine a few days ago. intuitively, I think of permission issues. however, I almost changed all permissions under the web directory to full control, but the problem still cannot be solved. I checked a lot of information and couldn't explain it clearly. some say to change this, but also to change that. later, I finally noticed that when an error occurs, ASP is displayed.. Net Temporary Files folder access is denied. therefore, go to this directory and add the ASPnet and network service users to the permission, and set the permission to writable. The problem is solved!