To maintain information security at HMS, we will no longer support macOS Mojave after November 30, 2021. We will continue to support macOS Big Sur and Catalina. Find out which version of macOS you are using by following Apple’s instructions. 

Note that with any major OS upgrade, some of your existing applications may be affected. If you have any questions before upgrading to Big Sur, or if you want to upgrade to Catalina, contact your local IT support team.   

To upgrade to macOS Big Sur: 

1. Back up your Mac using Time Machine.  
2. Open the macOS Big Sur page in the App Store. 
3. Select Get to download the installer. 
4. After the download is complete, the installer opens automatically. 
5. Follow the prompts to install macOS Big Sur.