Achievements not working correctly error 0x87c40011

When I finished all Halo games on legendary, I was supposed to receive many achievements but I got no pop ups and now can no longer access them and only recieve the error 0x87c40011.

I have already power cycled correctly by holding down buttons and done everything else recommend

:)

 

Halo MCC Achievement error 0x87c40011

I have the exact same problem with the same error code, but then with the game Goat Simulator. Some achievements synced correctly and suddenly my collectible achievement didn't unlock. Going to the Achievements App gives the error 0x87c40011

 

Halo MCC Achievement error 0x87c40011

Having the same issue. Was working fine earlier today. Achievements stopped popping so I went to see if it was in classic Halo MCC "Done...Unlocking" stage. Got that same error message (0x87c40011) when I tried to look at MCC achievements. Achievements for
other games are working fine.

 

Checking your profile on Halowaypoint
www.halowaypoint.com/.../neurionstorm

It appears you have only played 1 mission in campaign on legendary, could it be that you activated a certain skull which prevents your score and achievements from registering
(Like the scarab gun skull in Halo2). If the Halowaypoint website does not register your progress
(in case of certain skulls being active which eliminate the scoring etc as mentioned above) it will not give you an achievement

As for the error can you try deleting and redownloading your profile on your Xbox ?

Add or Remove a Microsoft Account on Xbox One

 

Just checked further on your profile, I didn't realize you completed it on co-op apologies for this, also it can take up to 72 hours after you get this error for your achievements to trigger on the Xbox.

Your Halowaypoint profile indicates you got

So you should be set and within the next 72 hours it should pop up

 

I had a very similar problem. Finished Halo 2 on single player legendary last night and didn't get any of the achievements for finishing the game on any difficulty yet I have the individual achievements for finishing every level. I havn't played with any
skulls on. I entered the same error code on the xbox support site and it wasn't recognised. I power cycled but it has done nothing yet.