Still have this bug. On PC, tried everything I could find online. I've stopped playing the game because of that... how ridiculous

@Mirrix16. I have never played on Mobile (yet) and am getting the same issue. I just started seeing this issue randomly yesterday 7/24. Uninstalling and reinstalling in Epic Games client fixed it. But today it's failing again. I will say it has been failing to close as of late for some reason. And I have to force it to close either with task manager or the windows crash handler thing.

I hadn't had any issues until yesterday (7/21) when I received this issue. I uninstalled and reinstalled Arena and it worked fine all day. Then today (7/22) I get the issue again. Arena loaded without an issue on my phone just now.

I am going to try to uninstall/reinstall again to see if that fixes it, but hopefully this can get corrected soon.

UPDATE: just finished a fresh install and it seems to work fine. i wonder if there is either an issue shutting down that corrupts a file OR if playing on mobile does something on the server side as each night i play on my phone in bed. Either way, hopefully there is a quick fix soon.

July 20, 2022: bug still exists. My internet and connection are fine, I have uninstalled and reinstalled MTG Arena four times and I'm still getting this message. I was playing on MTG Arena just fine last night - less than 24 hours ago!

this has been happening for the past week now. so many people below also have this problem and can't play the game. hope there is a fix or acknowledgement of this soon.

im having trouble with this how do i fix it?

While trying to connect getting the message: "Error Updating Data".
Other accounts do work, So It seems there's a problem with my account.

Anyone find a solution to this problem? I’m on a iOS tablet and getting the same problem. No problem with my internet

Posting my screenshot, because it looks different than OP's - assuming it is because OP posted this a couple of years ago.

I have had this error for about a week straight (as of March 24 2022) on my Windows desktop. No issue connecting via Android phone using the same wifi connection, so definitely not my internet connection.
Note: the arena server page is not reporting any outages, which would have explained this error

PC user here and I have tried all the troubleshooting solutions available online with the same "Error Updating Data - Please check your connection and try again" notification every time the game is launched.

Also tried playing via Epic Game platform; same result.

Same problem here. Since neo update i'm not able to run the game on Android Smartphone (HUAWEI P30).

me too

Does someone solve this issue? I had the same, i tried all procedures but i can't fix it... my connection works naturally...

Same here, I can log in with my friends account, but I can't get into the main menu with my own account. It stucks at the loading screen and shows this message. There is nothing I can do to fix that because the game literally works, my account is corrupted from the game side.

Having the same issue. I had it installed once on my laptop months ago but recently needed to repair and wipe said laptop and now I'm stuck on this error message. Tried all the suggested fixes with proxy and downloading from epic games with no luck. Had trouble getting it on my phone but switching off wifi to data fixed that issue. Idk what's going on but it's frustrating!

Error updating data at 09.23.2021
This morning it was fine and after one hour the game was searching for server and told me "Error updating data" and now i'm stuck on startup with this message.
I've tried on another computer and it's the same issue.
My connection is ok, I'm using it to write this ticket.
I saw it will have an update later, maybe is it connected ?
Thanks for time and patience, hope it will be ok

I have the same issue on PC, it's been more than a week, i tried everything along with uninstalling and then installing again but it doesn't resolve my issue. It started on the date of the update, not knowing there was a maintenance update on the 27/8 i tried to log in which was my bad and it started with the black screen and only the cursor some music in the background as soon as i logged in. After a few days and tries of fixing this problem, looking up solutions, i even tried making an account on Epic Games to launch the game from there. Never managed to fix it and it's been more than a week, now at the launch of the game i get this error. I tried contacting support but they cannot help me unfortunately...

Same here, I’m on iOS, iPhone 8, sometimes I can log in, I tried re installing the game 3 times

Same issue here, anyone got any luck fixing it? Or is it a server side issue?