It's strange to see Microsoft's own advice on the actual strength of passwords clash with the advice from Jesper Johansson, a well-respected security strategist at Microsoft.
Jesper recommends that passwords should be as complicated as possible and written down on a piece of paper and stored in a safe place. However, this guidance from Microsoft goes against that bit of advice.
"Random combinations of letters, numbers, and symbols that must be written down to be remembered, can be misplaced, or found by others and used."