SharePoint Product Configuration Wizard – The web configuration file, WEBCONFIG.ACCSRV.XML, does not have element

Exception: System.IO.InvalidDataException: The web configuration file, C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\config\WEBCONFIG.ACCSRV.XML, does not have element "configuration/configSections/sectionGroup[@name='SharePoint']" or it is invalid.
at Microsoft.SharePoint.Administration.SPAspConfigurationFile.CheckMergedActionsConfiguration(XmlDocument xd, String sourceFileName, Boolean createMergedActionsConfiguration)
at Microsoft.SharePoint.Administration.SPAspConfigurationFile.ApplyActionToXmlDocument(XmlDocument xdAction, XmlDocument xd, String sourceFileName, SupportedXmlDocutmentActions supportedActions)
at Microsoft.SharePoint.Administration.SPAspConfigurationFile.MergeWebConfig(XmlDocument xdWebConfig, String fileMask)
at Microsoft.SharePoint.Administration.SPWebService.ApplyApplicationContentToLocalServer()
at Microsoft.SharePoint.PostSetupConfiguration.ApplicationContentTask.Run()
at Microsoft.SharePoint.PostSetupConfiguration.TaskThread.ExecuteTask()

Rozwiązanie:

Przed uruchomieniem wizarda usunięcie wszystkich plików WebConfig.******.XML z folderu „C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\16\config”