How to upload files in windows server
You can upload the files using either FTP softwares or by File Manager in cpanel.
Option 1: For FTP upload
You can download the FTP softwares like filezilla. Now login into ftp using the sitename, username and password. There in the left pane you can find the directory of your local machine. In right pane, find the httpdocs folder and move into it. Now you can upload all your files just by dragging files from your local folder to httpdocs folder.
Option 2: For Plesk control panel file manager
Login into your plesk cpanel using the https://dnswind.com:8443/login.php3 with the provided username and password
-Now you can view the home page
-In right pane, below the hosting tab you can find a option called File Manager. Click it.
-File manager will have different folders called error docs,cgi-bin,web users etc.
-Find a folder called httpdocs which is the home or main folder
-Use the Add New file option in top of the page
-You can see the Browse option by which you can upload the files from your local machine.