Blog Disabling App Nap for Citrix Receiver and Viewer to prevent disconnects. Disabling App Nap for Citrix Receiver and Viewer to prevent disconnects. I recently began running Citrix Receiver and Viewer via FireFox to access my corporate network as we are migrating to a cloud based virtual environment using my iMac/Yosemite OS X and noticed. I've even updated Citrix to 12.4. I've been getting kicked out 7-10 times per day. I tested my connection on Friday with a ThinkPad laptop (Windows) and didn't get kicked out at all (I'm back on my Mac now and have already been kicked out twice this morning) so this is definitely a Mac/Citrix problem and not my internet connection.
I am using Citrix receiver apps to do my day to day job. The same citrix apps can also be accessed via web browser (Safari) and everything was working fine till EI Capitan version.
Post upgrade to macOS sierra I am unable to connect/launch any citrix apps. I tried with citrix receiver and via web browser as well, but its not connecting.
Is anyone else facing the same issue or know the fix.
![Citrix for mac download Citrix for mac download](https://discussions.citrix.com/uploads/monthly_2018_01/5a6915795c0b2_Screen2.png.fc3c746c056c3e855812f17a99ffdad9.png)
Earlier i thought it may be some connectivity issue but after a lot of troubleshooting it still didn't work and shows the same error 'Initialization Failed.' (snapshot attached).
Then suddenly clicked in mind that i have just upgraded my MacBook OS. To confirm whether its new macOS problem or anything else, I installed Windows10 on vmware fusion and tried connecting the citrix receiver from it and it just worked !!! without any further troubleshooting it is confirmed that the issue is in new macOS.
So as a temporary workaround one can use virtual windows OS on top os macOS sierra to launch citrix apps.
But apple need to fix it in Sierra.
MacBook Pro with Retina display, macOS Sierra (10.12)
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