Implementations - SQL Uninstall Guide
12/21/2023 1:05 pm EST
Standard Uninstall Steps

- Delete the local security groups

- Stop all SQL Server services using the appropriate Sql Configuration Manager.

- Open Control Panel, and select Programs and Features
- Right click Microsoft SQL Server 20__ and select uninstall, then click remove
- Make sure the instance is selected and click next
- Review the ready to remove page and verify all the components expected are there. If so, select next.

- SQL Server FullText
- Data Quality Services (DQS)
- SQL Server (Database Engine), Replication
- Analysis Services in SharePoint integrated mode
- Analysis Services
- SQL Server (Database Engine), Analysis Services
- Reporting services
- SQL Server Management Tools – Complete, Backwards Compatibility, SDK, Connectivity
- SQL Server Management Tools – Basic
- Business Intelligence Development Studio
- Integration Services
- Data Quality Client
- Distributed Replay client
- Distributed Replay controller
- Reporting Services SharePoint Web Front-end
- Reporting Services SharePoint
- Books On-line
- Business Intelligence Development Studio, SQL Server Management Tools - Complete
- Business Intelligence Development Studio, SQL Server Management Tools - Basic
- SQL Server Management Tools
- SQL Server (Database Engine), Business Intelligence Development Studio, SQL Server Management Tools
- Business Intelligence Development Studio, Integration Services
- LocalDB

- Uninstall the existing SQL Server and all the components from the add remove program.
- Backup the registry, look to google if you do not know how to do this.
- Delete the following keys using regedit
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server
- HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer
- Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and delete all the sub-keys
- referencing SQL Server.
- delete all the sub-keys referencing SQL Server.
- Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services
- delete all the keys referencing SQL Server.
- Rename or Delete all the SQL Server folders in the computer
- C:\Program Files (x86)\Microsoft SQL Server
- C:\Program Files\Microsoft SQL Server
- Reboot the Machine
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