Achievement App not working, anyone else?

I haven't been able to access my achievements since Saturday, Jan 10th. When I try to access them from the actual Achievements app, I get the error 0x87c40011. When I try to snap the achievement app, I get the error 0x87c47500. And when I try to access
my achievements through SmartGlass, it just says, "Something went wrong when loading this section. I've done the hard reset multiple times and that doesn't seem to help. My achievements that I'm unlocking in game are not added to my gamerscore either.
None of my friends seem to be experiencing this. Normally, this wouldn't bother me too much, but I've been playing Magic 2015 lately and those achievements are very context specific and hard to recreate, so I would hate to have to do them over again.

:)

 

Xbox One achievement error. Code 0x87c40011

Not working for me! Halo is not working, achievements app is not working...frustrating for a 400€ Xbox!

 

Xbox One error code: 0x87c4000f

here the same...achievement app is not working

 

Hey the same here and it´seems MS has no idea what´s to do... i posted in every thread like this in the forum hoping someone will read it. i called the support...but every time the same reactions...we´re working on it...yeah - of course....

 

Sweet! My achievements just started popping! It's good to know that someone out there in Microsoft land gets *** done when people are unhappy. Thanks!

 

I have this issue now. It started when i was playing Halo MCC, nothing count's on my gamerscore and achievements doesn't pop anymore. Did you do something to get it work?