Hi all ! i was having same problem, but kikosphere#09010 Solution, works for me.

same problem. i tried every solution in the book and nothing works. please fix this bug

Smfx88#33327 's solution and it worked for me! Thanks

Hello,

It sounds like you may need some more troubleshooting advice. Please review our Technical Troubleshooting articles for what advice we have available.

Thanks!

I have the dumbest, brute force "solution" to this problem. It takes a bit of luck, but guess when the download is going to randomly decide to kill itself and alt+f4 (I know... hardy-har-har). It is the only way to progress the download because every time it hits that error, it forgets everything and restarts. Don't hit the error, and it will eventually make it.
Note: I decided to try and uninstall and reinstall based on troubleshooting and was stuck downloading 3.96 GB at >100MB per attempt. Starting the download and waiting until some arbitrary amount had been downloaded and then killing the task and starting again.

Having the same issue. I've tried everything in this forum, on the troubleshooting articles, and more. I've tried all of these possible solutions on two different machines and both are having the same issue. The game was working perfectly fine for me at the Zendikar release, but somehow it's borked beyond belief now. Hope this nonsense gets fixed soon.

Hello,

It sounds like you may need some more troubleshooting advice. Please review our Technical Troubleshooting articles for what advice we have available.

Thanks!

This is happening to me after I connect to matches. By turn 2 it just kicks me off the match claiming network issues and when I try to reconnect it gives this error message. Funniest part is I can exit the game and launch it again to connect back to the match 2 turns later with my end doing nothing and discarding random cards. I have no idea if the error would occur again, as I just conceded and went on to the next match, which got me disconnected again and here I am.

easiest way is to launch it through the epic games launcher (but you have to do this every time, it doesn't actually fix the problem, but at least you can play!)

I have had the same issue. Haven't been able to play since Kaladesh. Gonna try the bellow fixes but:
WIZARDS! THIS IS A RECURRING ISSUE!

Update: No fixes worked and I have an outstanding troubleshooting ticket on this issue since Kaladesh release! Both new downloads and epic games launcher versions won't update.

Hello,

It sounds like you may need some more troubleshooting advice. Please review our Technical Troubleshooting articles for what advice we have available.

Thanks!

I've been having this issue since the Kaladesh Remastered update. I've tried every solution here and in the related troubleshooting pages to no avail. Given that there are many other games that don't have these issues and the chronic mismanagement of their respective products and communities that WotC has displayed over the past couple of years, I think I'm going to just uninstall and play Commander with friends once the pandemic settles down.

Hello,

It sounds like you may need some more troubleshooting advice. Please review our Technical Troubleshooting articles for what advice we have available.

Thanks!

it would be nice if you ******** would fix your ******* game that I've put hundreds of dollars into and haven't been able to play for weeks. still no fix for this??? this has happened to me so many times I have completely given up. Jesus Christ wizards is the absolute worst

I fixed mine.
run the CMD command as administrator
run the following:
ipconfig /flushdns
ipcnfig /registerdns

see if that workd

What to do if you cant find the folder in User?

I've tried all fixes found on this thread but none worked for me.

I was able to resolve the issue by renaming the Wizard of the Coast folder to Wizard of the Coast.old and MTG Arena worked right away after restarting the application.

The folder is located in C:\Users\<user>\AppData\LocalLow

Hope this helps.

I've had this happen every time a set update comes out. Only way I've ever gotten it to work before is to brute force it by trying over and over usually for 3 to 4 hours.

I have the exact same problem. It is getting ridiculous. They update the game and now I can't even play. I paid money, I kind of want a refund cause of it. This issue is ridiculous. 7/11/2020, and probably about 3 weeks early. I uninstalled and reinstalled but still have the problem.

I have this same issue but have a Mac. How to fix?