EndNote X9 Compatibility and System Requirements
A note those who have EndNote on their Mac/Apple computers:
released macOS 10.15 Catalina recently, and made the decision to drop all 32-bit application support with this release, which impacted .
X9 for macOS has been extensively updated to work with all Apple computers. If you already have EndNote X9, please install all as they become available to avoid interruption in your workflow.
If you are running EndNote X8 or earlier versions on an Apple computer running another operating system it is still suggested you upgrade to X9.