For older agents, this key may be named: HKEY_LOCAL_MACHINE/SOFTWARE/UptimeSoftware/up.time NT agent
Change the value in the Port field to the desired port.
Stop and Start the Windows agent by selecting Run from the Start Menu and entering regedit in the Open field of the Run dialog box:
\n net stop "up.time agent"
\n net start "up.time agent"
\n For older agents, the agent service name is up.time NT agent.