Minecraft: Java Edition Login Issues FAQ

ATLauncher - Help - How to add an account

Minecraft Launcher – Minecraft Wiki

Account migration problem - Mojang Account / Minecraft.net Support - Archive - Minecraft Forum - Minecraft Forum

MCL-18779] I can not download Minecraft maybe for some migration problems. - Jira

Account Migration

Microsoft Account Migration Authentication - Free Coin Boosters!

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

Minecraft account migration, something went wrong : r/Minecraft

Account Migration Authentication Error - Xbox Game Pass for PC

Mojang Studios begins its mandatory Microsoft Account requirement for Minecraft: Java Edition