Process.Kill throws a Win32Exception (access denied)

Question

Process.Kill throws a Win32Exception (access denied)

I have the following code:

foreach (var process in Process.GetProcessesByName(name))
{
    try
    {
        process.Kill();
        if (!process.WaitForExit(timeout))
        {
            session.Log("Killing process {0} timed out.", name);
        }
        else
        {
            session.Log("Killing process {0} finished successfully.", name);
        }
    }
    catch (Exception exception)
    {
        session.Log("Exception while trying to kill process {0}: {1}", name, exception.ToString());
    }
}

Process.Kill throws the following exception:

Exception while trying to kill process <process name>: System.ComponentModel.Win32Exception (0x80004005): Access is denied
   at System.Diagnostics.Process.Kill()
   at CustomActions.CustomActions.KillAllProcesses(String name, Session session, Nullable`1 wait)