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Release Java Edition Bug-fix update Patch of 1.17 Caves & Cliffs: Part I

Minecraft 1.17.1

Released on 6 July 2021, Minecraft Java Edition 1.17.1 is the bug-fix update for Caves & Cliffs: Part I. It fixes 42 bugs, including server chunk loading crashes and Ender Pearls that vanished on logout, and adjusts Axolotls, Goats, Drowned and Powder Snow.

Released 06 Jul 2021 Resource pack format 7 Data version 2730
Are my mods ready?

Key takeaways

  • Mob tweaks: blue Axolotls can now only be bred, and two non-screaming Goats have a rare chance to produce a screaming Goat.
  • Copper: Drowned drop a Copper Ingot 11% of the time, plus 2% per level of Looting.
  • Bug fixes: 42 bugs are fixed, from crashes and ghost blocks to diamond ore distribution that differed from 1.16.5.

What changed

MobsBlue Axolotls no longer spawn naturally and can only be obtained by breeding. Status effects now also apply to Goats when they jump or ram.
ItemsPowder Snow fills Cauldrons twice as fast, and Zombies, Husks, Zombie Villagers and Drowned no longer pick up Glow Ink Sacs.
FixesMC-228802: chunks no longer fail to load on servers with a crash, and the --server launch parameter no longer crashes the game (MC-228828).
FixesMC-227891 and MC-228219: Ender Pearls no longer despawn when a player logs out or enters the exit End portal.
World generationEmerald Ore generated too often and diamond ore distribution changed from 1.16.5: both are fixed (MC-226926, MC-229191).
TechnicalDeaths of named mobs are logged, and with DNS redirection the client sends the hostname it actually connected to, as before 1.17.

Source: official Java Edition 1.17.1 changelog

Mods & loaders for 1.17.1

Mods must be rebuilt for each version. Counts from the files published on Modrinth and CurseForge, in our catalog.

LoaderMods with a 1.17.1 fileLatest build
Fabric1170.20.1
NeoForge9·
Forge15637.1.1
Quilt25·
Shader loadersShaders with a 1.17.1 fileLatest build
Iris70·
OptiFine66·
Popular mods Sodium · AvailableJust Enough Items (JEI) · AvailableFabric API · AvailableLithium · AvailableIris Shaders · AvailableOptiFine · Available
211 mods in our catalog have a 1.17.1 file → 172 texture packs and 56 maps in our catalog support 1.17.1. →

How to play 1.17.1

  1. 01

    Open the Minecraft Launcher and select Minecraft: Java Edition.

  2. 02

    Go to Installations, create a new installation and choose version 1.17.1.

  3. 03

    Back up your worlds before opening them in a new version.

From first snapshot to release

0 snapshots, 3 pre-releases and 2 release candidates over 18 days.

  1. 1.17.1-pre118 Jun 2021
  2. 1.17.1-rc101 Jul 2021
  3. 1.17.106 Jul 2021
All 5 test builds →

Minecraft 1.17.1 FAQ

When was Minecraft 1.17.1 released?

On 6 July 2021, for Java Edition, four weeks after 1.17 Caves & Cliffs: Part I (8 June 2021). It is the last 1.17 release before 1.18.

What does Minecraft 1.17.1 change?

It fixes 42 bugs and makes small gameplay changes: blue Axolotls only come from breeding, Goats can breed screaming Goats, Drowned drop copper more often and Powder Snow fills Cauldrons faster.

Should I update from 1.17 to 1.17.1?

Yes. It fixes server crashes when loading chunks, lost Ender Pearls and ghost blocks, and adds no new content. Select Latest Release in the Minecraft Launcher to install it.

Which Java version does Minecraft 1.17.1 need?

Java 16, like 1.17. Java 17 only became necessary with 1.18. The Minecraft Launcher installs the right version automatically.