---
description: "Learn more about: C1251"
title: C1251
ms.date: 11/04/2016
ms.topic: reference
ms.assetid: 0b46e0a5-c290-48d8-ba4e-f526ae68993b
---
# C1251

> warning C1251: Unable to load models.

The Code Analysis tool reports this warning when there is an internal error in the model file, not in the code being analyzed.