When I use the family settings with my three children's computers, suddenly none of them are able to watch the youtube videos they used to be able to with Windows 8.

It says "The Video is unavailable with Restricted Mode enabled. To view this video, you will need to disable Restricted Mode."

According to this thread:

"YouTube respects the Prefer:Safe header used by Firefox and Internet Explorer when parental controls are turned on. YouTube currently does not provide any workaround or override capability for content that they don't consider "safe for kids". To get Internet Explorer and Firefox to not send this header, you need to make sure Web Filtering AND Web Activity Reporting are both turned off for your account."

This is very aggravating, as the main reason to use Family settings is for web filtering and web activity reporting.