CasTool.exe is a command-line program that allows you to register or unregister a child server.
Use CasTool.exe to balance the load of your Control Manager parent servers and to allow child server unregistration and registration from one parent server to another.
To use CasTool.exe:
From the Control Manager server, click Start > Run.
Type cmd and then click OK.
On the Windows command interpreter, go to the Control Manager root directory (for example, <root>\Program Files\Trend Micro\Control Manager\WebUI\download\tools\).
Refer to CasTool.exe commands for a list of commands you can execute.