Just to update.

I can confirm that MSE does update automatically even if Windows Update is not set to download updates automatically. However it took over 2 days on my laptop above before it did so. This is not very satisfactory as a laptop might not get used for several days and if it takes another two days the definitions could be too old tom protect the laptop.

I have now set up an update schedule in Windows Scheduler so it updates at every boot.

Only problem now is to find out how to run it minimised from within scheduler but then again the DOS Box is only visible for around a minute so not a problem really

Solved it by the following:

Create a start up update in Scheduler.

Edit the properties to show the "General" Tab Change the User or Group to System in the box "Enter Object Name".

This stops the cmd window from showing.

Can also set it to repeat at whatever interval you wish. Ignore the drop down box which only gives a few alternatives. Just enter what you want, ie 6 hours.