Can't change PolyBase service accounts without reinstalling the PolyBase feature in SQL Server 2016 Content provided by Microsoft Applies to: SQL Server 2016 DeveloperSQL Server 2016 EnterpriseSQL Server 2016 Enterprise Core Select Product Version All Products Summary Currently, to change the service accounts for the PolyBase Engine and PolyBase Data Movement Services in SQL Server 2016, you have to uninstall and reinstall the PolyBase feature.An update is available that enables you to change the PolyBase service accounts without uninstalling and then reinstalling the PolyBase feature. More Information This update is included in the following cumulative updates:Cumulative Update 1 for SQL Server 2016 Service Pack 1Cumulative Update 4 for SQL Server 2016 About SQL Server 2016 buildsEach new build for SQL Server 2016 contains all the hotfixes and security fixes that were included with the previous build. We recommend that you install the latest build for SQL Server 2016. References Learn about the terminology Microsoft uses to describe software updates. Last Updated: Jan 17, 2017 Did this solve your problem? Yes No Tell us what we can do to improve the article Submit Thanks! Your feedback will help us improve the support experience.