How to migrate your Mojang account to a Microsoft account

[Windows Central]

It sounds complicated, but it's not.
Minecraft developer Mojang recently began encouraging players to migrate their Mojang accounts to Microsoft accounts. The primary reason for this is that Java Edition users will need to migrate to a Microsoft account to gain access to Bedrock Edition in the Minecraft Launcher when the Microsoft PC Bundle releases in 2022 (you can get it early through Xbox Game Pass on Nov. 2, 2021). Another reason why migrating accounts is a good idea is because Microsoft accounts have better security.

Full story from the WindowsCentral blog...