Citrix Workspace App 1910.2 for macOS
If you just updated your MacBook to latest macOS 10.15 Catalina, make sure you’ll update your Citrix Workspace App to version 1910.2 also. Otherwise you may up to get an error: “You have not chosen to trust GlobalSign Root CA the issuer of this certificate”.
Download and install the latest Workspace App for macOS from this link:
Citrix released Citrix Workspace App 1910.2 for Mac