If you want your Facebook pictures to sync, don’t turn on HTTPS! Facebook has a new security feature that lets you use secure HTTPS protocols when possible in order to help keep your private data private. However, if you turn this option on, some Facebook app connectivity may be broken. For example, on Windows Phone 7, if you turn on HTTPS you may notice that your friends’ photos no longer update, you will no longer see any images in your “What’s New” Feeds, and you won’t see Facebook photo libraries update in the Pictures hub. The same is true with the older HTC Sense UI installations in Windows Mobile 6.x as well as some Android Facebook integration customizations. Most native Facebook clients are unaffected by the change.
You may see a note about the new HTTPS features when you log into Facebook at the top of your home page. To turn it off and get your Windows Phone 7 photos syncing back, go to Account > Account Settings > Account Security.
Did you turn on the Facebook HTTPS feature and then wonder why your Facebook news feeds weren’t showing pictures anymore?