Final update: I turned off every element of the iCloud from - Sys Prefs - iCloud The idea was to turn it on one by one and see where the error occurs. Stumbled on the fact that auto fill of the user name and password using Safari's built in function is apparently what is triggering the error Went into Keychain access and deleted the credentials for work Thus far - no issues other than having to manually fill out username and password every time I sign in (couple three times a day given time out feature) Guess that is the solution - still do not understand exactly why it happened but wanted to close the loop.
Citrix Receiver for Mac supports the following operating systems: macOS High Sierra (10.13) macOS Sierra (10.12) Mac OS X El Capitan (10.11) Note: Mac OS X releases prior to Mac OS X El Capitan are not supported. Compatible Citrix products. Citrix Receiver for Mac is compatible with all currently supported versions of the following Citrix products. Receiver for Mac overview High performance web and self-services access to virtual apps and desktops. Configure for anywhere access from your desktop or web access with Safari, Chrome or Firefox.