Minecraft Java Edition, legacy purchase from Mojang prior to Microsoft owning the company,...

That’s odd because if this is the Minecraft for Windows it will be purchased through Microsoft Store. The Minecraft that can be purchased through Mojang is Minecraft Java Edition.

Kindly make sure that you’re signed in under the account where the Mojang account was migrated. Please try other Microsoft accounts as well.

Thanks Francia, maybe i am mistaken and it is java edition that I own.
I would like to add that when I log into minecraft.net and click on 'Get Minecraft' > 'Minecraft Java Edition' it gives me a download option NOT a buy option and says beside it "Already own Minecraft? Download it again."

I have submitted a ticket to Mojang with screenshots of everything so hopefully, we will be able to figure this out soon.

Hello DarkTS,

Greetings!

Thank you for posting in Xbox Community.

Identify the account type you have then proceed with the recovery

Minecraft: Java Edition Account Types | Minecraft Help

For recovery visit the following links:

Mojang - Changing Your Email Address (Mojang Accounts) | Minecraft Help

Minecraft (Legacy) - Change Your Email Address (Legacy Minecraft Accounts) | Minecraft Help

Microsoft Account - Need help with your new Microsoft account for Minecraft: Java Edition?  | Minecraft Help

We're looking forward to hearing from you. If there are any inquiries about our description or if there are any misconceptions, do reply to the post.

Did you purchase it on Microsoft Store/Microsoft Website or Mojang's website?

Because on Microsoft Store, there is no Minecraft Java Edition, it is available on Mojang's website.

When Minecraft stopped working, I used my Microsoft account. And this issue happened after I changed my main alias from E-Mail 2 to E-Mail 1. I can play Minecraft if I log in with my E-Mail 2.

I purchased Minecraft on my Mojang account before the migration, but I don't use my mojang account and that Microsoft account that was migrated to.

With my Mojang account (E-Mail 1) migrated to Microsoft account (E-Mail 4) I bad the Java Edition. With my first Microsoft account (E-Mail 1, now 3) I had Minecraft Bedrock Edition. And with the other MIcrosoft account (E-Mail 2, now 1) I have both Java and Bedrock.

I purchased Minecraft Bedrock Edition on my Microsoft Account (E-Mail 1, now 3) from the Microsoft Store and I purchased Minecraft Bedrock Edition on my Microsoft account (E-Mail 2, now 1) from the Microsoft Store but the Java Edition I purchased from minecraft.net. On my Mojang account (E-Mail 1, now migrated to Microsoft Account with E-Mail 3) I bought Minecraft Java from minecraft.net.

HI ower set x,

Thanks for reaching out to us in the forums with this question. the promotion for buying the Minecraft: Java Edition and receiving the Windows 10 version for free is only valid if the Java Edition was purchased prior to October 19, 2018, so that is no longer
valid at this time. If you did make the purchase of the Java Edition prior to that date, you would need to go to your Mojang account in order to claim the gift code. For further information concerning this, you may check out the topic

Minecraft for Windows 10 available on the Mojang website.

I hope that this helps out!