When trying to run a Hosted Application from Blackbaud Hosting Services and upgrading their Mac to macOS High Sierrra you may receive the following message:
"Citrix Viewer" is not optimized for your Mac. This app needs to be updated by its developer to improve compatibility.
"Hosted Application" is not optimized for your Mac. This app needs to be updated by its developer to improve compatibility.
Please note this is an issue with Citrix Receiver and the new macOS High Sierra. This is only a notification message warning that macOS will soon no longer support 32-bit applications, per Citrix you can safely ignore this message for now as they are working on an update.
Note: We provide links to third-party websites in an effort to help you resolve your issue. We are not responsible for the information on third-party websites, and we cannot assist with implementing the resolution from these websites.