Hi @Hicham ZOUAGUI ,
As you can see from this link, upgrading from SQL Server 2016 evaluation to SQL Server 2016 standard is not supported.
So you can uninstall the evaluation version and reinstall the standard version.
Remember that you need to back up files which you can see from the below link before uninstalling.
https://learn.microsoft.com/en-us/sql/sql-server/install/uninstall-an-existing-instance-of-sql-server-setup?view=sql-server-ver15&tabs=Windows10
And before reinstall, please follow the below steps to remove all components of previous installed SQL Server cleanly:
- Remove all SQL Server components from 'Programs and Features'
- Backup the registry
- Delete the following keys in 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
- Go to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services and delete all the keys referencing SQL Server
- 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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