To hide the SSOWatch icon:
Create a new DWORD value under HKLM\Software\Enatel\SSOWatch\CommonConfig called NoTrayIcon and set the value to 1.
One Identity does not provide support for problems that arise from improper modification of the registry. The Windows registry contains information critical to your computer and applications. Make sure you back up the registry before modifying it. For more information on the Windows Registry Editor and how to back up and restore it, refer to Microsoft Article ID 256986 “Description of the Microsoft Windows registry” at Microsoft Support.
Log off and on to see the change take effect.