Restarting a Trace Session
When you create a trace session, TraceView automatically enables the trace providers and starts the trace session. You can use the Start Trace option to restart only a trace session that you stopped. To restart a stopped trace session, do the following:
In the Trace Session List, right-click any cell of the row for the trace session.
Click Start Trace.
After a brief pause, the value of the State column changes from STOPPED to RUNNING.
TraceView uses the EnableTrace function to restart the trace session. EnableTrace is described in the Microsoft Windows SDK documentation.