I have found all the terminals in Anniversary, but when I go to the classified section in waypoint, it says they are all locked and I haven’t found them. It has done this with some of my achievements too! Anybody know whats going on? Had similar problems?
Nevermind, I got it.
How? I have the same issue?
Yes please share! I have the same issue 
I think you have to enter the code in that is shown at the end of the terminal. I haven’t done it yet, but that it what it looks like.
I tried it out last night. It was exactly what I said. To unlock it, watch each terminal till the end, then the code will pop up and enter that it will unlock the terminal in the classified section. It will also give you 7000 Reach cr too, if you want it or need it that is.
So I have to replay every single level an find the terminals all over again just to watch them to the end? UGH
No, just go under the extras menu to find your terminals.
Ok so I worked it out for anyone having a ‘problem’ with the Halo Waypoint not registering that you’ve unlocked the terminals.
Basically, there’s nothing wrong with it, it’s just misleading.
Where it says that you have 0/10 terminals, it doesn’t mean the Waypoint hasn’t registered that you’ve found them in game. What it actually means is that you haven’t unlocked the Credits for the terminals yet. So basically, click on the terminal, enter the correct code and it will then unlock, giving you the credits. This will only work if you have actually found it in game though.
And you don’t have to watch the terminals all the way to the end, you can back out of them as soon as they’ve begun if you want.
> Ok so I worked it out for anyone having a ‘problem’ with the Halo Waypoint not registering that you’ve unlocked the terminals.
>
> Basically, there’s nothing wrong with it, it’s just misleading.
>
> Where it says that you have 0/10 terminals, it doesn’t mean the Waypoint hasn’t registered that you’ve found them in game. What it actually means is that you haven’t unlocked the Credits for the terminals yet. So basically, click on the terminal, enter the correct code and it will then unlock, giving you the credits. This will only work if you have actually found it in game though.
>
> And you don’t have to watch the terminals all the way to the end, you can back out of them as soon as they’ve begun if you want.
Thank you, this has had me confused for the longest time.
Ok, so even after I’ve found all te terminals and put in the codes i get this, “THIS DATA IS LOCKED. YOU MUST FIRST ACCESS TERMINAL 1 ON OR NEAR INSTALLATION 04.” need help
Yea im having the same problem here. Could anyone tell me what that means??
I’m having trouble with this. I’ve gotten the “Dear Diary…” Achievement but when I go to waypoint and type in the right codes it still flashed red.
I got the same problem, no matter how many times i enter the code, online or on xbox it says that i havent unlocked it yet…
Hey all. This issue has since been remedied. I suggest you all attempt to reenter these codes now, as they should unlock for you. 
Also, as a note, please do not revive really old threads. Creating a new thread with your issue or posting in a more recent thread with your same issue are preferable. If you are having more issues, please use your own thread or a new, existing thread to notify us.