I have a question. I've owned Minecraft Java since 2015. Can you still install Minecraft Windows 10 Editon for free in 2020 if you have Java?
You had a key that you can redeem, but where can you find it?
On the Mojang page, just log in and then on the account page you will see the Windows 10 key below which you can copy.
Ok, I'll see if I can find it! I'll be in touch immediately
I can't find a key on the page
The distribution of the Win 10 version to existing customers of the Java version (purchased before October 2018) was discontinued in April 2020.
At the same time, the RTX beta for the Win 10 version came out.
Edit: I just read after it was deactivated.
This has not been possible since 2018.
Or. Since April 2020 if - as in this case - you've had Minecraft for a few years.