Folder encryption

I have just now encrypted a folder using the built-in encryption tool. I do see the lock icon now, but when I open the folder I can read the contents. Now this is on my home computer, I am the only user, and it automatically logs me in without any password. Would this encryption be sufficient to...

My computer is set up with a user account, and I forgot my windows login password. I have always use my pin, and when I went to login today I got a message that my password has expired and I need to create a new one and then I would be able to continue to use a pin. I do not remember my...