This option will enable the Develop tab in Safari top menu In preferences > Select Advanced tab > check Checkbox 'Show Develop Menu in Menu Bar' (Located at the very bottom).Launch Safari 12 Browser and select Safari from the Menu on top > go to Preferences and select it.On a Mac Station running Safari 12 perform the following actions: This will add Safari 12 and later to the list of browsers that Citrix Receiver Launcher will be used. For StoreFront deployments, modify web.config under the Receiver for Web (RfWeb) site (typically C:\inetpub\web.config using your preferred text editor and locate the line : Ģ. The value of the platforms attribute is a regular expression specifying the browsers that Citrix Receiver Launcher is used for client detection and HDX launches.