Halo MCC achievements stuck at "Done! Unlocking..." since launch

I have four achievements stuck these are "halo" "sacrifice" "skulltaker halo:CE: iron" "skulltaker halo CE: boom" all say done unlocking and should have been unlocked on the 29/12/14 around 23:00 GMT. further info needed, and how to stop it happening again.
not playing anymore of the game till it works so i know i wont get any other achievements messed up.

 

I got 7 achievement at 100% at posting time. Skulltaker HALO CE:Grunts birthday party,Skulltaker Halo 2:blind,Enamored,Examiner,Delta HALO,Metropolis and Cairo Station. They spread of two days some on 12-28-2014 and some on 12-29-2014 on CST.

 

I have the forza horizon 2 Achievement "bragging. Rights" doing the same thing atm

Come up with an error code didnt write it done though i found this thread looking for a soloution through Google.

 

Mine are showing on here. Not on xbox. ( that I know of). At least I have em.

 

I have 2 in the same state, both say "DONE, Unlocking". The achievements are "Inner Demons" (secret achievement) and "Siege Me If You Can", both are Ryse. Think I unlocked them on the 12-29-2014.

 

Found a more general thread on the issue, will post to that one.

 

I completed a Halo 2 Mission without dying, Achievements named "Demon" I should have unlocked this at about 1-5pm GMT 10+ (Sydney, Australia) on 3/1/15 (3rd Jan 2015) This Achievement is stuck at Done! Unlocking...

 

343 This is a joke! I'm sick of all your promises to fix your horribly broken game, I have achievements dating back nearly 2 months now, get it fixed 343 now! I WILL NOT B BUYING HALO5 because of this crap, u guys have just lost most of your fan base, it's
no wonder no body plays Halo anymore, you guys have *** Halo

 

Same for me. Just beat achievement "the silent cartographer" and says done! Unlocking... But has not unlocked yet.

 

Hey there, Buckley007! I can see on
your profile here that you have gained that achievement, so it's all good on our end. If you don't see the same thing on your console, please remove your profile, hold the power button for 10 seconds on your console, then download your profile again. That
should sync it up with our servers again, and show the achievement as Unlocked!

SULLACO - I'm very sorry to see that you have achievements that haven't unlocked! I see on
your profile here that you have achievements that have unlocked all the way back to launch day. If there are any there that you should have that are marked as "Done! Unlocking...",
please post up the exact name of those achievement so that we can look into this further. :3

 

same for me i have the "world traveler" achievement not unlocking and has the "done! unlocking..." msg. i dont know how long ago i got this as i only just noticed it now and thus looked it up but i havent played multiplayer for at least a week and a half
so it must be from then?

 

I have an achievement that says Done! Unlocking. It is Skulltaker Halo 3: Black Eye. It should have unlocked on 1/12/2015 at approximately 9:20 pm est.

 

So posting on here might get my achievements to pop? I have an unusually unique achievement issue. On January 8, 2015 I had "Done! Unlocking..." On 3 achievements (Knight in White Assassination, Departure, and No Pain, No Gain) after launching Halo MCC after
their Title Update additional achievements. The next day I guess I got Knight in White Assassination and Departure (I say I guess because they are no longer "Done Unlocking..." But they are also MIA (nowhere in my achievements) and 'No Pain, No Gain' is still
stuck at "Done! Unlocking..." 5 days later that one is still stuck and the other 2 are still MIA. Weird.

 

i have one achievement stuck at "Done, Unlocking" from the Halo: MCC, the achievement is "Quis custodiet ipsos custodes?"

 

Hey, guys! 343 is still working on getting achievements fully sorted out. If you are still not seeing your achievements on your profile here at xbox.com as unlocked, please reach out to them to let them know of the issues you are having. Some take several
days before they will pop, but I see that several of you have your achievements now.

Please reach out to 343 and advise them of the situation. They will be able to let the right people know what is going on for now. Thanks so much for your patience, and for your understanding.