1) Login to Microsoft Admin Center
2) Enter your admin username and click on the Next button.
3) Enter your Password and click on the Sign in button.
4) You will be redirected to the new Microsoft 365 Admin Center. Click on the icon in the top left. Then choose Billing and Your products.
5) You will see your products listed here. Click on the product that you want to install.
6) Select the version, language and CPU that you want. Click download to get the installer.
7) Click on Show activation keys.
8) Click on Copy key to clipboard.
9) Click on the Copy button.