Unable to Connect, Login, etc. Authentication failed: Timeout.
Unable to Connect, Login, etc. Authentication failed: Timeout. Waiting for server. There's a white box spinning. Game has been working all day. Took a break and now it's not working.

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Henixon#72566 commented
Workaround:
run MTG Arena as admin update starts!
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de__mars#62445 commented
Can't log in either. Same issue
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asmallgeck0#34510 commented
Can’t login today - server has been doing this since lunchtime
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Cash#95758 commented
It would be nice to correct this flaw, so that the user would be re-directed to the App Store for an Update. That is what corrected this behavior, which is still happening, even though the re-direction is working in other flows.
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BigfootKilla#82308 commented
I'm seeing this issue happen repeatedly. It happens specifically due to game updates/maintenance. I have to reinstall the entire game to get it fixed. There needs to be better handling of updates. Maybe a built in check for updates function from the login screen so you can force it to check the update before the login process? Needs to be fixed ASAP, though, because I'll just quite playing soon rather than reinstalling the game over and over. (Note: testing the Repair Game Files option did not help resolve this either - only a full uninstall/reinstall seems to fix it currently.) Windows 11 24H2 on the latest updates.