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Applies to: 
SQL Server on Windows
Follow these articles to uninstall an existing instance of SQL Server completely, and prepare the system so that you can reinstall SQL Server.
In this section
Uninstall an existing instance of SQL Server (Setup)
This article describes how to manually uninstall a stand-alone instance of SQL Server.
Uninstall a Cumulative Update from SQL Server
This article describes how to remove a Cumulative Update from a stand-alone instance of SQL Server, on both Windows and Linux.
Uninstall Power Pivot for SharePoint
This article describes how to manually uninstall Power Pivot for SharePoint.
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This article describes how to uninstall Reporting Services servers for both SharePoint mode and Native mode servers.
Uninstall and remove Master Data Services
This article describes the process of uninstalling and removing Master Data Services from the local computer.
Remove Data Quality Server Objects
This article describes how to manually remove the Data Quality Server objects after uninstalling either SQL Server or just the Data Quality Server component in Data Quality Services (DQS).