/ Downloads / Citrix Receiver / Earlier Versions of Receiver for Mac. Filter on Find Downloads. Citrix Receiver Earlier Versions of Receiver for Mac Subscribe to RSS notifications of new downloads. Receiver for Mac. Receiver 12.8.1 for Mac. Receiver 12.7 for Mac. Citrix Receiver Updates logging is enabled by default with Citrix Receiver for Mac Version 12.6 and later. This is helpful when troubleshooting Receiver auto-update related issues. To enable Session Logging Select Connection Diagnostics or Full in the Session Logging.
Applicable Products
- Receiver for Mac
Symptoms or Error
New users after installing Citrix Receiver 12.7 or above for Mac on macOS High Sierra when launching an application or desktop might get the following error:
![Citrix For Mac Receiver Citrix For Mac Receiver](https://sipa.columbia.edu/sites/default/files/styles/scaled_no_crop/public/embedded-media/light version.png?itok=Psi8O158)
Citrix Receiver For Mac 10
Solution
With macOS 10.13 High Sierra, Apple has introduced a new feature, where user approval is required to load any newly-installed third-party kernel extensions (KEXTs). Citrix Receiver 12.7 for Mac requires Citrix kernel extension to be loaded for Generic USB Redirection to function properly.
If users see the “System Extension Blocked” prompt when launching a Citrix Receiver desktop or application, they can go directly to System Preferences > Security & Privacy and Click Allow against Citrix Systems Inc as shown below to allow loading of the Citrix kernel extension:
Users can also go to the Devices tab in Citrix Receiver Preferences and follow the steps as shown below in the screenshot:
In addition, users can also open preferences from the Devices tab on the Desktop toolbar or the USB Devices menu in the main Citrix Viewer menu as shown below:
If users see the “System Extension Blocked” prompt when launching a Citrix Receiver desktop or application, they can go directly to System Preferences > Security & Privacy and Click Allow against Citrix Systems Inc as shown below to allow loading of the Citrix kernel extension:
Users can also go to the Devices tab in Citrix Receiver Preferences and follow the steps as shown below in the screenshot:
In addition, users can also open preferences from the Devices tab on the Desktop toolbar or the USB Devices menu in the main Citrix Viewer menu as shown below: