How to uninstall SQL,because it won't let me.\

Question

TITLE: Remove SQL Server 2019 ------------------------------ There are validation errors on this page. Click OK to close this dialog box. Review errors at the bottom of the setup page, then provide valid parameters. ------------------------------ BUTTONS: OK ------------------------------.

it shows this error while I'm trying to unistall it,please help !

Thank you !

Answer 1

Hi @Buta443,

If you want to uninstall it clean please see the following steps. Otherwise, you need to be more descriptive about your problem. For example, you have failed to install and want to uninstall and reinstall. In that case, you need to provide your installation log.

Here are steps to remove all components of previous installed SQL Server completely:

1. Remove all SQL Server components from 'Programs and Features'
2. Backup the registry
3. Delete the following keys in regedit:

--HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Microsoft SQL Server

--HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\MSSQLServer

4. Go to HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall and delete all the sub-keys referencing SQL Server
5. Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services and delete all the keys referencing SQL Server
6. Reboot the machine

In addition, please use an administrator account to reinstall SQL Server on your computer(Right click->run as administrator).

Best regards,

Seeya

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