diff --git a/net/socket.c b/net/socket.c
index 3182b37..7337f4f 100644
--- a/net/socket.c
+++ b/net/socket.c
@@ -457,7 +457,7 @@ static int net_socket_connect_init(VLANState *vlan,
             } else if (err == EINPROGRESS) {
                 break;
 #ifdef _WIN32
-            } else if (err == WSAEALREADY) {
+            } else if (err == WSAEALREADY || err == WSAEINVAL) {
                 break;
 #endif
             } else {
diff --git a/net/tap-win32.c b/net/tap-win32.c
index 081904e..596132e 100644
--- a/net/tap-win32.c
+++ b/net/tap-win32.c
@@ -480,7 +480,7 @@ static int tap_win32_write(tap_win32_overlapped_t *overlapped,
         }
     }
 
-    return 0;
+    return write_size;
 }
 
 static DWORD WINAPI tap_win32_thread_entry(LPVOID param)