Unable to Access Lobby - 'Disconnected: Detected Data Mismatch'

Issue should now be fixed! (At least, for the most part)

A server patch for this issue was released 40-ish minutes ago, so hopefully it should be fixed now.

(Source: Trello board)

EDIT:

This patch seems to only fix the recent increase of this issue, so a decent chunk of players should see this resolved hopefully.

If you're still encountering it, then you should try to repair/validate your game files, if it still persists try reinstalling the game to see if that fixes it.

You guys might've already tried those steps before, though it's still worth a shot due to the new server patch.

(Source: Reddit)

This information is wrong, it is still not working. I still have the same errorcode

@LOLA_BLiTZ3R 

From what I've heard, the server patch was intended to fix a decent chunk of players encountering this, so it's still possible for players to encounter it.

Try repairing/validating the game files, if it persists then you could try reinstalling the game.

I know you probably have tried this before, though it's still worth a shot to try it again due to the recent server patch.

Detected Data Mismatch Still not fixed after patch. Tried all the suggested "fixing" tips but we know it is serverside after recent confirmations. 

Product: Apex Legends
Platform:PC
Please specify your platform model. PC
AMD or Nvidia Model Number x
Enter RAM memory size in GB x
What is your gamertag/PSN ID/EA Account name? JayT11727
Please provide your squad mates' gamertag/PSN ID/EA Account name if possible. x
Are you using any software with an overlay? No
Which Legend were you playing (if applicable)? x
Which Legends were your squad mates using (if applicable)? x
Where did the issue occur? In the lobby (waiting area before the match)
Which part of the map or menu were you in? If you don't remember the exact name, please describe the area or what you were trying to do in the menu. x
What were you doing when the issue occurred? E.g. respawning a squad mate at a beacon, using an ability, a squad mate left the game. x
Did your squad mates also experience the issue? I don't know
How many matches had you played in a row before the issue occurred? x
When did this happen? (dd.mm.yy hh:mm) May/June
How often does the bug occur? Every time (100%)
How severe is your issue? Major impacts to gameplay
What happens when the bug occurs? Detected Data Mismatch
What should be happening instead? Letting me play/enter the lobby
Steps: How can we find the bug ourselves? There has already been patches to fix this

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Detected Data Mismatch Still not fixed after patch.

For over a month I've been unable to log into Apex.I've contacted support dozens of times with no resolution. I've also contributed to multiple threads related to the same topic:

- https://answers.ea.com/t5/Technical-Issues/Disconnected-Detected-Data-Mismatch/td-p/12555444

- https://answers.ea.com/t5/Bug-Reports/Unable-to-Access-Lobby-Disconnected-Detected-Data-Mismatch/td-p/12569059/page/5

Support has had me reinstall the game, repair game files, try logging in through the EA launcher, try logging in through Steam, creating a new user on my Windows computer, logging in through a VPN. None of these solutions work. If I login through the EA launcher my account cannot connect to a lobby. It attempts multiple times and eventually fails. Through Steam I get an error "Disconnected: detected data mismatch".

I have been able to create new accounts and play on them fine using the same computer. My original account does not work on any other device either.

Before being completely locked out, for a while when I would log into Apex my account would be in one of two states. Either I would have all of my cosmetics and currency, or I would have no cosmetics, but hundreds of loot boxes available to open. When I tried to purchase the latest battle pass I became completely locked out of my account.

To me this seems like an issue with two accounts that might have been merged into one when Origin went away, but that's just a guess. Any help would be appreciated.

they just dont care i think i been posting on this forum a lot like you ! same on reddit or discord i was chatting with the support too and no one wad able to help me this is terrible for real