Hi,
This is a problem that I have had with every windows 10 upgrade I have done.
The problem does not occur with the base Administrator Account. It only appears on any additional user accounts that you setup.
The solution is to replace the UK Standard keyboard setting with the United Kingdom Extended Keyboard setting. Even if you don't use an extended keyboard you have to use the United Kingdom Extended Keyboard setting.
To make this change:
log onto the user account with the problem (you will have to do this with each user account you have setup. You can also do it to the Admin account as well, but changing the Admin account won't ripple the change through to the user accounts.)
click on the following options
Windows icon at the bottom left corner of your screen
settings (if you are not at the settings front page use the arrow at the top left to return to the front / main page)
time and language
region and language (on lhs of the screen)
in the centre of the screen click on the English UK Windows display language icon
options will appear and you click on it
add a keyboard
scroll down to the bottom of the list and click on United Kingdom Extended keyboard
After that you are on your own as I already have the UK Extended keyboard installed and it is greyed out on my screen.
Now the problem is that you now have more than one keyboard installed and my advice is to delete all the other keyboards. I am sorry but I can't remember how I did it but it will be in this section of Region and Languages and English UK Windows display language and add a keyboard etc. (Perhaps you find the keyboard you want to delete and you right click it?????????)
After having installed the United Kingdom Extended Keyboard you can carry on without deleting the other keyboards. As other posters have mentioned you should see something like the words UK EXT on the taskbar at the bottom right and if you don't see those words you can click on the words that are there and they will cycle through the installed keyboards until something like UK EXT appears. This means that you are then using the UK Extended keyboard. (If you only have one keyboard setup then there is no text displayed.) (Please note that you cannot click on any words that appear and expect to find the UK Extended Keyboard until you have gone through the above routine to install the UK Extended Keyboard.)
I deleted the other keyboards as I kept on accidentally changing the keyboard away from the UK EXT option.
Good luck
Last edited by eticket; 10th Mar 2016 at 19:59.