How to activate MS SQL Server 2019 key?

Activating a MS SQL Server 2019 key is really simple, just follow these steps:

1. Go to the link and download the file.
2. Run the file and install the program.
3. Once the installation process is complete, browse to C:\SQL2019\Express_ENU and select SETUP
4. Click on Maintenance and Click on Edition Upgrade.
5. Enter the Product Key to complete the activation process.

The key is not working

If you have activated the key according to the guide but the code appears not to work, please check what type of error message you receive and depending on it follow the appropriate instructions:

• My key is Duplicated / Already used 
• My key is Invalid 
• My key is region locked / can't be activated in my country 
• My key activated a different product 
• My key did not activate all of the content