HtmlInputFile class. Compatible with .Netframework 4/4.5 ?

I am working with a website that was done over 10 years ago in asp.net /netframework 1.1 with VB.Net . For fileUpload , it is using HtmlInputFile class. When i try uploading a jpeg to the godaddy server (this site is hosted on windows server 2012) , there is a "Server error in '/' Application: Access to the path 'G:\PleskVhosts\mydomain\httpdocs\imagessubdir\aaaaaaa.jpg' is denied." The permissions inside the directory has been set with full access/read/write/execute permissions for the user . I spoke with Godaddy support, they feel i need to add permissions settings also to web.config file , but i'm not sure that is necessary. Or?? Is  System.Web.UI.HtmlControls.HtmlInputFile compatible any longer? Thanks Ned