MtG Arena unable to login authentication failed fix 2021

By Jason Faulkner

Some Magic the Gathering Arena players are experiencing an “authentication failed” error and are unable to login when trying to connect to the game’s servers. Unfortunately, since MtG Arena requires online connectivity, there’s no way to play the game if this error occurs. So, here’s what to do to fix the MtG Arena authentication…

Jason Faulkner
Jason Faulkner

Jason Faulkner is Evolve Media's Evergreen SEO Manager. On a typical day, you can find him working desperately trying to get late-1990s/early-2000s PC games working at 4K and 16:9 ratio without crashing.

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