Windows 10: Kid getting to blocked websites

I've got parental controls blocking youtube but my kid is able to access it anyway through windowed apps like People or Solitaire Collection -- really any built in app and conveniently, they cant all be blocked or uninstalled.


How do I stop access through these programs please?

:)

 

How to Block Websites

I have googled a bit and found software that can be used to block websites on a computer. I also found another way by using Windows which I would prefer. My problem is I must be doing something wrong. Here is the site that has the steps.
How to block websites | PCWorld

Here is what happens when I perform step 6. I am the administrator by the way.





Any ideas on how to make this work?

 

How to Block Websites

Sorry everyone but I have done everything suggested and it still does not block the website.

 

How To Block Facebook

Step 1. Explore C:\Windows\System32\drivers\etc.
Step 2. Look for a file named as hosts, then open it with Notepad.
Step 3. At the bottom of the file, add the line as shown below:
127.0.0.1 www.blockingsite1.com
We have just shown you www.blockingsite 1.com as example only, replace it with the actual URL so that they are inaccessible to all.
Step 4. Simultaneously if you have more websites that would like to be blocked, just press Enter and repeat step 3 to add additional URL until all desired websites are added. Now make “Enter” at the last line of the UR
Step 5. Save and close the file.
After doing the above formalities all websites that you have entered will be blocked with immediate effect. Definitely this theory will help you to prevent certain websites from being accessed by your kids or anybody else for any reason.