After creating a new admin user, it is not possible to start and stop the Toolset Integration Tray Application, the TFTP server, and the SFTP/SCP server tools from the system tray, and the SNMP Trap Receiver Tool cannot be launched.
The tools and services work if they are started from services.msc.
The issue has to do with the operating system, and it only occurs when User Account Control (UAC) is enabled.
To run a tool when UAC is enabled:
Right-click the tool you want to run.
Select Run as Administrator.