---
description: "Learn more about: Fatal error C1254"
title: Fatal error C1254
ms.date: 10/04/2022
f1_keywords: ["C1254", "FATALERROR_PluginVersionMismatch"]
helpviewer_keywords: ["C1254"]
ms.assetid: cb1377cf-869e-432d-941f-71f77134f97a
---
# Fatal error C1254

> Plugin version mismatch: '*module*' version '*version-number*' doesn't match the version '*version-number*' of the PREfast driver

The Code Analysis tool reports this error when there's an internal error with the plugin version, not in the code being analyzed.