Minecraft account migration not working or failing? Here's the official word

Minecraft players are reporting that account migration is not working or failing. Here is what Mojang has to say on the matter.

Minecraft is FORCING Migration (lost usernames, eternal sadness)

Minecraft account migration issue - Microsoft Community

Minecraft: Java Edition Login Issues FAQ

Mini tool partition wizard stuck while migrating os : r/pcmasterrace

Minecraft Account Migration Error - Microsoft Community

How To Turn Your Minecraft: Java Edition Singleplayer World Into A 24/7 Multiplayer Server

It says I don't own Minecraft after completing migration. what happened? : r/Minecraft

Custom – Minecraft Wiki

Mojang to Microsoft migration error. What do I do? : r/Minecraft

That Microsoft account doesn't exist - Microsoft Community

Minecraft - How To Migrate Your Mojang Account & Get The Migrator Cape!