Microsoft has improved the built-in Photo app in Windows 8.1 with editing functionality but the app has dropped Facebook and Flickr integration alongside the removal of support for images on network storage.
A spokesperson on Microsoft's community forums explains that the software maker introduced the Facebook and Flickr integration originally in Windows 8 as very few apps would initially be available. "Now there are many apps in the store that offer ways to view photos on other services," explains the Microsoft spokesperson. "We’re confident Facebook will offer great ways to view and engage socially with photos on Facebook. We welcome Flickr to do the same."
Source: Microsoft Community, Via: The Verge