I've recently redeemed my 'Minecraft' windows 10 code from my Minecraft Java account.

I am trying to redeem a Minecraft windows 10 edition key from the Mojang website.

This is the prompt I am trying to redeem from:

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Minecraft for Windows 10

You bought Minecraft: Java Edition during a period of time when Minecraft for Windows 10 was included for free. Claim your redeemable gift code by clicking the button below and follow the instructions. As you
might have guessed, Minecraft for Windows 10 can only be played on Windows 10.

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It allows for users who have purchased the java edition of the game to then redeem a code for the windows 10 edition of the game.

This is the error message that pops up:

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Error! It looks like we've temporarily run out of gift codes for Minecraft for Windows 10. Don't worry though, more codes should be on their way. Please check back later!

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Thanks for any help!

When you redeemed your Java Minecraft on Mojang, you have gotten a 5x5 code to redeem Minecraft on the Windows 10 store.

This redemption is a separate service of your Mojang account, and it's possible to use a Microsoft Account email that is different from your Mojang account email.

Mojang (which gives you Java Minecraft) is separate from the Microsoft Windows Store App, which uses a Microsoft Account email when you redeemed that 5x5 code.

After redemption of that code, the Windows 10 Minecraft is tied to the Microsoft Account email you used on your Windows 10 PC. From then on, you don't really need the Mojang account anymore, if you only want to play on Windows 10. You will then get the game
from the Windows 10 store only, with the E-Mail account you used on the Windows 10 store during code redemption.

So make sure you are signed in with the Microsoft Account email (which might not necessarily be the Mojang account email) when you use the Windows 10 Store app to re-download your Windows 10 Minecraft again.

Please check under https://account.microsoft.com/billing/orders/ if your purchase for Minecraft Windows 10 shows up.

Be aware that Minecraft for Windows 10 is different from Minecraft on Xbox and also different from Java Minecraft on PC. If you bought Java Minecraft BEFORE Oct. 2018, you need to sign into your Mojang account on the Minecraft.net website, and can redeem
a code for Windows 10 Minecraft.

After you got Minecraft for Windows 10, make sure you sign in with the same account that you bought it. Open the Windows 10 store, check that's the right account in the upper right.

Then open the menu and check your library. If you bought Minecraft 10 with that account, you will find it there.

Yes you have the Java Edition. Players who have purchased Minecraft: Java Edition before October 19th, 2018 can get Minecraft for Windows 10 for free by visiting their Mojang account.
Log into account.mojang.com, and under the “My Games” heading you will find a button to claim your gift code. If you purchased Minecraft: Java Edition
after October 19th, 2018, the button will not be there, so if you’re unsure of when you purchased Minecraft: Java Edition, that’s a good way to check. Pressing the button will generate a token and send you to a Microsoft redemption page.

There are a couple of reasons why you may not be able to get a code:

You have signed in to the wrong Mojang account, which did not purchase the PC/Mac version previously.

You have already requested a code.

To verify that you have purchased Minecraft on your Mojang account, sign in at the Mojang account page and look for your purchase under ""My Games."" If you own it, it will be listed there against your profile name. If you don't see it listed, you either don't
own it or didn't use that account to buy it.