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

Buta443 0 Reputation points

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 !

SQL Server
SQL Server
A family of Microsoft relational database management and analysis systems for e-commerce, line-of-business, and data warehousing solutions.
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  1. Seeya Xi-MSFT 16,416 Reputation points

    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


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

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

    Best regards,


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