By checking Enable Blank Screen option on the streamer / Security tab, it should work to blank the remote computer's screen when in a remote session in most cases.
If it does not work, please follow below instructions to apply a workaround.
- Go to the streamer installation folder, then Driver/Monitor folder:
C:\Program Files (x86)\Splashtop\Splashtop Remote\Server\Driver\Monitor
- Right click on the install bat file, then run as administrator.
On 32bits computer, please run install_driver.bat,
On 64bits computer, please run install_driver64.bat
3. That's it!