Access Denied

I'm getting this error and i don't know why. I have uploaded the struct.db changed the Ports in the Program.cs and have tryied redoing it all

Unhandled Exception: System.Net.HttpListenerException: Access is denied
at System.Net.HttpListener.AddAllPrefixes()
at System.Net.HttpListener.Start()
at server.Program.Main(String[] args) in C:\Users\Owner\Desktop\EmpireWorld\s
erver\Program.cs:line 26

Run as admin, or look in Program.cs at the line 26