diff --git a/win_installer/src/net.rs b/win_installer/src/net.rs
index ea24c0c..21990de 100644
--- a/win_installer/src/net.rs
+++ b/win_installer/src/net.rs
@@ -44,7 +44,8 @@ pub fn connect_network_share(
         lpRemoteName: remote_name.as_c_str().as_ptr() as *mut u8,
     };
 
-    let username = to_cstr(username);
+    let username = format!("{server}\\{username}");
+    let username = to_cstr(&username);
     let password = to_cstr(password);
 
     // mount