Page 1 To install Citrix Receiver for Mac OS X 1. In a web browser, navigate to www.Citrix.com, hover over Downloads and then click Download Receiver. Click Download Receiver for Mac. 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. Perl ide for mac.

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:

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:

Citrix Receiver for Mac users with Citrix Receiver already installed when upgrading to macOS High Sierra are automatically granted approval to the Citrix kernel extension that was already present.
Citrix Receiver for Mac does not require any explicit approvals to enable USB redirection when installed on previous versions of macOS (10.12, 10.11. and 10.10).

Applicable Products

Receiver for Mac

Information

Apple released Mac OSX 10.10 on October 16th. Changes in Mac OSX 10.10 require changes in Citrix Receiver for full operation.
Citrix will release a tech preview release of Receiver for Mac 11.9 designed to support OSX 10.10.
Users upgrading to OSX 10.10 who want to continue to use Receiver should install the Receiver for Mac 11.9 Tech Preview.
How will existing users of Receiver 11.8.2 and XenApp and XenDesktop be impacted?
Users may experience issues with unresponsive keyboard input while using Receiver or may not be able to connect through NetScaler Gateway.
As this is a major OSX update, the full extent of possible issues user may experience with Receiver for Mac 11.8.2 is unknown.

Citrix Viewer For Mac

Reporting issues for tech preview
Tech preview is not supported by Citrix tech support. Users on Mac OSX 10.10 using the Receiver for Mac 11.9 – Tech Preview should report issues to the Tech Support Discussions Forum.

Additional Resources

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Citrix Receiver For Mac Os Yosemite

CTX200212 - Keyboard Input Fails in Citrix Session from Receiver for Mac with OSX 10.9.5