New Minecraft launcher requires an username for Java Edition

Hi there!

What happens when you put the username innit?
Do you receive some error?

This ticket will automatically reopen when you reply.

I tried putting my actual username, but the launcher rightfully claims the username is taken. I preferred to not put another one to not accidentally change my username.

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I'm having the same issue. When I started Minecraft I had Java first, and when the Microsoft migration things happened, I did what was needed. 

I haven't had this issue in the past but as I tried just recently to play Java again, my username isn't registered? I've had the same one for awhile and it shows up in the username bar faint.

My Java username is Kaiet4 and it is associated with my own account. But overall, Java claims that I don't have a username though I've had the game in its edition for longer than its been with Microsoft.

And when I put in my username, it shows that it's already registered. It confuses me a lot since it's my own account that it's talking about. 

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Thank you for your report!
We're resolving and linking this ticket forward as a duplicate of MCL-23976, as that ticket contains more detailed information and/or has already been triaged by Mojang.

If you would like to add a vote and any extra information to the main ticket it would be appreciated.

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