Why doesn't my Facebook app work?

[Windows Central Question]

Facebook apps don't work

Since my computer upgraded to Windows 10, none of the apps on facebook work. Why is that?

 

[Guzzler3]

Re: Facebook apps don't work

I just rolled back to W8.1, and the Facebook app is no longer in the store.

Also trying to update my apps the following error out:
FreshPaint
Wikipedia
Microsoft Mahjong
OneNote
Microsoft Solitaire Collection