Datapack Codex

Java Edition 25w34b

Minecraft Wiki article. Categories: Java_Edition_versions, Java_Edition_1.21.9_snapshots, Java_Edition_snapshots_released_in_2025, Java_Edition_snapshots, Pages_with_YouTube_videos

📌 Mirrored from Minecraft Wiki

This article is reproduced from Java Edition 25w34b on the Minecraft Wiki. Mirrored from revision 3654573. It is licensed CC BY-NC-SA 3.0 by the Minecraft Wiki contributors — not under the Codex’s CC BY-SA 4.0, and it may not be used commercially. Edits belong upstream, not here.

On this page
Minecraft 25w34b
25w34a.jpg: Infobox image for Minecraft version 'Minecraft 25w34b'
Java Edition 25w34b.png: Infobox image for Minecraft version 'Minecraft 25w34b'
{
    "title": "Minecraft 25w34b",
    "images": [
        "25w34a.jpg",
        "Java Edition 25w34b.png"
    ],
    "rows": [
        {
            "field": "''(link to Java Edition article, displayed as Java Edition)''",
            "label": "(link to Edition article, displayed as Edition)"
        },
        {
            "field": "August 19, 2025",
            "label": "Release date"
        },
        {
            "field": "(link to Snapshot article, displayed as Snapshot)",
            "label": "(link to Version types article, displayed as Type)"
        },
        {
            "field": "(link to Java Edition 1.21.9 article, displayed as 1.21.9)",
            "label": "Snapshot for"
        },
        {
            "field": "[https://piston-data.mojang.com/v1/objects/f5f3b6aa26ad6790868d8506b071c6d6dad8d302/client.jar Client] ([https://piston-meta.mojang.com/v1/packages/79fa05a66c725be5f5c16b320bdc3cde0918bdb7/25w34b.json .json])<br />[https://piston-data.mojang.com/v1/objects/29d04ae8f7b701c55de6ca1547cc558409ea5368/server.jar Server]",
            "label": "(link to Tutorial:Installing a version#Manual version installation article, displayed as Downloads)"
        },
        {
            "field": "[https://piston-data.mojang.com/v1/objects/ae52d482cdb62e737030563d5b13f4b9d5bac515/client.txt Client]<br />[https://piston-data.mojang.com/v1/objects/d71f77fcaf3000594e16df779536acbe32b9ba97/server.txt Server]",
            "label": "(link to Obfuscation map article, displayed as Obfuscation maps)"
        },
        {
            "field": " <span title=\"decimal\">dec</abbr>: </span>1073742088<br /> <span title=\"hexadecimal\">hex</abbr>: </span>40000108",
            "label": "(link to Protocol version article, displayed as Protocol version)"
        },
        {
            "field": "4540",
            "label": "(link to Data version article, displayed as Data version)"
        },
        {
            "field": "66.0",
            "label": "<span normal;\">(link to Pack format#List of pack formats article, displayed as Resource pack format)</span>"
        },
        {
            "field": "84.0",
            "label": "<span normal;\">(link to Pack format#List of pack formats article, displayed as Data pack format)</span>"
        },
        {
            "field": "<span class=\"plainlinks\">[https://en.wikipedia.org/wiki/Java_version_history#Java_SE_21_.28LTS.29 Java SE 21]</span>",
            "label": "<span normal;\">Minimum Java version</span>"
        }
    ],
    "invimages": [],
    "footer": "<table auto; word-break: break-word;\">\n<tr inherit;\">\n<td 0.4em\" >[[Java Edition  1.21.8|<span  1.21.8]]</td>\n<td 0.4em\">'''[[Java Edition 1.21.9|1.21.9]]'''</td>\n<td 0.4em\" >[[Java Edition  1.21.10|  1.21.10 <span inherit;\">\n<td 0.4em\">\n[[Java Edition  25w34a|◄   25w34a]]\n</td>\n<td 0.4em\">''' 25w34b'''</td>\n<td 0.4em\">\n[[Java Edition  25w35a|  25w35a ►]]\n</td>\n</tr>\n</table>"
}

25w34b is the fifth snapshot for Java Edition 1.21.9, released on August 19, 2025, which fixes connectivity issues with Realms.[1]

Fixes

2 issues fixed

From the 1.21.9 development versions

  • MC-300911 – Glowing item & block displays no longer glow

Other

  • Fixed some connectivity errors with Realms.

Videos

Videos made by slicedlime:

References

  1. ↑ "Minecraft Snapshot 25w34b" – Minecraft.net, August 19, 2025.

Sources