Solved - Microsoft migration issue using the FTB App

ATLauncher - Help - How to add an account

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I can't migrate my Minecraft account to a Microsoft account because I missed the first chance but I can't even migrate my ownership of Minecraft to a new Microsoft account. help?

Fix Can't Login to Minecraft Launcher After Migrating Mojang Account To Microsoft

Feed The Beast on X: It's nearly time everyone! Make sure to migrate your Minecraft Java account over to Microsoft. Don't panic if it's not working, you can contact their support team