Update on this issue:
8 September 2022 by @unknown -
Unfortunately, some of our network infrastructure doesn't currently support files larger than 4GB. At some point we will support larger uploads and downloads, but for now we'll update the documentation to reflect that 4GB is the limit.
[media]
[media]
Client does not permit worlds larger than 4gb uploaded to realms
Thank you for your report!
However, this issue has been closed as Working as Intended.
As mentioned in the dev note above and in the Minecraft Help article, this is currently a known limit for world uploads to Realms: https://help.minecraft.net/hc/en-us/articles/4409247032845-Minecraft-Realms-Plus-Creation-FAQ-
If you need help or have a suggestion you might like to follow a link below.
Quick Links:
📓 Issue Guidelines – 💬 Mojang Support – 📧 Suggestions – 📖 Minecraft Wiki