The Citrix Receiver for Mac team is working on product updates to support the upcoming release of (macOS 10.12) in Fall 2016. Citrix is committed to provide zero-day compatibility for Receiver for Mac when Sierra is generally available. Zero-day compatibility means Receiver for Mac will operate with the new operating system platform from Apple at release. In addition to zero-day compatibility, Citrix is reviewing new features that take advantage of Sierra. We will keep our customers informed as we learn more about the changes needed to support any of the new features. The Sierra beta is available to the general public.
Based on our early assessment of the current beta, we are aware of issues making ICA connections over SSL using Receiver 12.1.100 for Mac. Citrix has started to fix gaps and areas of incompatibilities with Sierra to ensure our commitment to Zero-day compatibility. Receiver for Mac 12.2 (available August 1, 2016) does not suffer from the SSL issue on Sierra.
2063, 779517, 9/8/2016, 9/8/2016, SIERRA SPRINGS, 5 GALLON BOTTLES OF. S3131LL/A, APPLE CARE PROTECTION PLAN FOR MACBOOK PRO. 7 buttons - wireless - 2.4 GHz - USB wireless receiver, General, Open Market. 3458, 780135, 9/9/2016, 8/4/2017, CITRIX SYSTEMS INC, GO TO MEETING/ASSIT. Citrix is moving away from Receiver and wants people to use the Workspace app as its replacement. Unfortunately, it hasn't been updated either. I do IT support for a large hospital system and I've had our physicians (a lot of them are Mac users) to use Chrome or Firefox until Citrix gets it act together.
Be aware however that Sierra beta is still not a supported platform. If Apple releases a new Sierra beta that causes Receiver for Mac to stop working, there is no guarantee that we will release a fix before the official release of Sierra.
Citrix recommends that our customers not install the Sierra beta in production.