diff --git a/phpBB/posting.php b/phpBB/posting.php
index 6584e241f5..c6d82a71f6 100644
--- a/phpBB/posting.php
+++ b/phpBB/posting.php
@@ -334,7 +334,8 @@ if ( !$is_auth[$is_auth_type] )
 			break;
 	}
 
-	header("Location: " . append_sid("login.$phpEx?redirect=posting.$phpEx&" . $redirect, true));
+	$header_location = ( @preg_match("/Microsoft|WebSTAR/", getenv("SERVER_SOFTWARE")) ) ? "Refresh: 0; URL=" : "Location: ";
+	header($header_location . append_sid("login.$phpEx?redirect=posting.$phpEx&" . $redirect, true));
 	exit;
 }