Having this issue right now.

same

Ssme thing since update. Cool that in this update was "Fixed a bug that could block logging in with a spurious "Authentication Failed" and/or "Attach Failed" message"...

Help please. PLease compensate my gold T_T

This issue started today after latest update.

RECEIVING THIS MESSAGE EACH TIME I TRY TO LOGIN..

I had this problem starting late last week. Previous times I saw the issue have usually been due to the server being down, and fixed simply by waiting less than a day. This time was different, and I and an acquaintance tried half a dozen devices over 5 days. Those with Windows 10 failed every time, including after trying every troubleshooting option suggested by Wizards Support. All devices with other OS were fine.

Our eventual solution: use prior version of the Arena launcher, which can be found in older versions of the installer (we used one from 2020 that had been saved way back then). We ended up downloading a 5GB update, and it had a few other issues, but it played perfectly.

Authentication failed for (username)
Timeout 14-1 -2022

Unable to log in. Authentication failed for account: time-out.

Mine has been like this since Dec 30th! When is wizards going to finally care?!

I got this for the last 4 days now.

Cannot start from this morning using my iPad. Is there any solution known?

4 days of this. tried everything

I'm having the same issue on Mac, sometimes is a "timeout" error, sometimes is a "Attach failed to drop attach".

Same issue, multiple reboot did not help...

Having the same issue here Dec 17th. Support sent me here. Reinstall did nothing. Reconnect did nothing. Log out/Log in did nothing. Reboot did nothing.

Also having the same issues as others, this is so frustrating!

same problem today (Dec 17th) on both mobile and desktop.

at first I get an "attach failed to drop other attach" error, then it enters in an infinite login timeout loop

I spent thousands of euros on Magic Arena, and now I can't access any type of device. The problem is clearly your server, because I have tried all the recommended solutions. No solution worked.
Either fix it now or I want my money back.
If necessary, I will contact a consumer association.
I am waiting for a real response and not for an automatically generated email.

This is also happening to me. I was able to create and sign into an alternate account, so it definitely seems something is off with my account details on the server side.