Sage has come out with version 21.1.  With this version, you will need to take note of your Client ID and Registration Name.  Once the newest version has been downloaded and installed, you will need to log into your License Administration and enter in this information.

To find out what version you are on: 

Click on your Home & Resource Tab at the top of your Sage home page, choose About Sage 100, that is where your version is listed.

To update your license info after the 21.1 install, go to your server, click on your License Admin tab, click on Update license information, enter in your Sage Client ID and Registration Name, then choose ok. 

You are now updated and ready to go.