title LOCALDB_ERROR_CANNOT_CREATE_INSTANCE_FOLDER | Microsoft Docs ms.custom ms.date 03/06/2017 ms.prod sql-server-2014 ms.reviewer ms.technology performance ms.topic reference ms.assetid 626b73d3-a257-4b45-82fb-c6299faa0001 author stevestein ms.author sstein manager craigg LOCALDB_ERROR_CANNOT_CREATE_INSTANCE_FOLDER Details Product Name SQL Server Event ID 256 Event Source SQL Server Local Database Runtime 12.0 Component Local Database Runtime API Message Text Cannot create folder for the Local Database instance at: %%LOCALAPPDATA%%\Microsoft\Microsoft SQL Server Local DB\Instances\<instance name>. Explanation A folder cannot be created under %userprofile%. User Action