---
title: "LOCALDB_ERROR_CANNOT_MODIFY_INSTANCE_REGISTRY | Microsoft Docs"
ms.custom: ""
ms.date: "03/04/2017"
ms.prod: sql
ms.reviewer: ""
ms.technology: performance
ms.topic: "reference"
ms.assetid: bb14e3c5-5349-47e8-8e6b-16ff26dfb368
author: "stevestein"
ms.author: "sstein"
---
# LOCALDB_ERROR_CANNOT_MODIFY_INSTANCE_REGISTRY
[!INCLUDE[appliesto-ss-xxxx-xxxx-xxx-md](../../includes/appliesto-ss-xxxx-xxxx-xxx-md.md)]
    
## Details  
  
|||  
|-|-|  
|Product Name|SQL Server|  
|Event ID|265|  
|Event Source|SQL Server Local Database Runtime 12.0|  
|Component|Local Database Runtime API|  
|Message Text|Unexpected error occurred while trying to modify the registry configuration for the Local Database instance. See the Windows Application log for error details.|  
  
## Explanation  
 An instance registry cannot be modified.  
  
## User Action