Thanks. Attached is screeshot of my preference settings - the default settings. However after deselecting the dismount on logoff, restarting then reselecting the dismount on logoff option the system now works as advertised: dismounts on logoff or power off or restart. One of thoese glitches I think. Anyway it is now OK. Thanks again
I've been using VeraCrypt for a few weeks now and it worked fine. But I now find that the volume does not dismount when computer shut down/power off. I've checked preferences and the ' mount selected volume on logon' is not checked. At the moment I'm manually dismounting before logoff. Any ideas please?