I am an administrator for a company that has an old version of Citrix Netscaler. The problem is that older SSL Cipher suites are no longer supported in the newest Citrix Workspace App. The Citrix Netscaler version we are running does not support the newest ciphers.
The jfet is. The only solution is to upgrade the Citrix Netscaler to a newer release that supports the modern ciphers.
For the short term a workaround is to use an older version of Citrix Workspace App / Citrix Receiver. The Chrome plugin you link to is an older release and will work with this old version of the Netscaler.
The oldest Workspace App that works is version 1903 (https://www.citrix.com/downloads/workspace-app/legacy-receiver-for-mac/workspace-app-for-mac-19031.html) which unfortunately is not supported on Catalina.
Oct 30, 2019 11:33 AM
Citrix Receiver For Mac 10.15.6
Mac OS X 10.5 Leopard Mac OS X 10.6 Snow Leopard Mac OS X 10.7 Lion OS X 10.8 Mountain Lion OS X 10.9 Mavericks OS X 10.10 Yosemite OS X 10.11 El Capitan macOS 10.12 Sierra. For MAC Computers with OS versions 10.13 and newer (names shown below) navigate to: Citrix for Mac OS 10.13 and Newer macOS 10.13 High Sierra macOS 10.14 Mojave macOS 10.15. Note: In Receiver for Mac version From Receiver for Mac version By default, Yes, notify me is enabled. If the user account is managed by an administrator or is under a company policy, the Citrix Receiver Updates options might be set according to the administrator-specified settings. Edit Custom Settings and create a new Preference Domain for com. Citrix Netscaler Gateway does not work in macOS Catalina 10.15.4 Note: this is about the Netscaler Gateway plugin for macOS, that is, the piece of software run in the client to access the VPN. Under macOS version 10.15.3, the extensions used by Citrix Netscaler Gateway plugin could be allowed in the Security settings under System Preferences. / Downloads / Citrix Workspace App / Workspace app for Mac / Citrix Workspace app 1910.2 for Mac Find Downloads Citrix Workspace App Search Downloads Support Resources Product Documentation Knowledge Center rz Support Forums Release Date: Oct 17, 2019 compatible with: Mac OS 10.13, 10.14, 10.15 Download Citrix Workspace app for Mac. MAC OS Supported Version Citrix Receiver Workspace App Download Link MacOS Mavericks (10.9). Mac OS Catalina (10.15) Not Support 2101 2101 Mac OS Big Sur (11.1). “Download Citrix Workspace app for Mac” as shown the images below. Morristown Medical Center.