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ViaBackwards

ViaBackwards

Allow older Java Edition clients to connect to newer servers.

893.2k
594
Utility

Compatibility

Minecraft: Java Edition

1.21.x
1.20.x
1.19.x
1.18.x
1.17.x
1.16.x
1.15.x
1.14.x
1.13.x
1.12.x
1.11.x
1.10.x

Platforms

BungeeCord
Fabric
Folia
Paper
Sponge
Velocity

Supported environments

Client-side
Server-side
Client and server

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Links

Report issues View source Join Discord server
Sponsor on GitHub

Creators

kennytv
kennytv Maintainer
creeper123123321
creeper123123321 Developer
FlorianMichael
FlorianMichael Maintainer

Details

Licensed GPL-3.0-only
Published 2 years ago
Updated 11 hours ago
DescriptionChangelogVersions

Show all versions

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5.5.2-SNAPSHOT+504

by kennytv on Nov 1, 2025
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7c98b75 Cancel sign editor open packet for invalid positions in 1.21.2->1.21 (#1099)

5.5.2-SNAPSHOT+503

by kennytv on Oct 28, 2025
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7d39bcc Fix regression in cancelling new 1.21.5 registries

5.5.2-SNAPSHOT+502

by kennytv on Oct 20, 2025
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85688be Go through normal registry handling for removed registries in 1.21.5->1.21.4

5.5.2-SNAPSHOT+501

by kennytv on Oct 18, 2025
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fd16c44 Add option to disable dialog handling in 1.21.6->1.21.5 (#1116)

5.5.2-SNAPSHOT+500

by kennytv on Oct 14, 2025
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a37605e Update VV usage

5.5.2-SNAPSHOT+499

by kennytv on Oct 13, 2025
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1d4e41f Fix custom action button in notice dialogs not added in 1.21.6->1.21.5 (#1117)

5.5.1

by kennytv on Oct 12, 2025
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  • Fixed errors with items containing new block entity data in 1.21.9->1.21.7
  • Fixed object text component handling in 1.21.9->1.21.7 (by EnZaXD)
  • Fixed debug sample subscriptions in 1.21.7->1.21.9 (by EnZaXD)
  • Fixed inverted hidden data component checks in 1.21.5->1.21.4

If you want to get larger version updates early, consider supporting me via https://viaversion.com/donate. See the previous update notes for more info.

5.5.1-SNAPSHOT+497

by kennytv on Oct 12, 2025
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eff5470 Remove instrument and jukebox playable in show_item hovers in 1.21.5->1.21.4

5.5.1-SNAPSHOT+496

by kennytv on Oct 7, 2025
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bbb52f5 Add --refresh-dependencies to publish workflow

5.5.1-SNAPSHOT+493

by kennytv on Oct 6, 2025
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0df9c50 Bump gradle/actions from 4 to 5 (#1115)

Signed-off-by: dependabot[bot] support@github.com Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

5.5.1-SNAPSHOT+492

by kennytv on Oct 6, 2025
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e8637e5 Update sound mapping format VV now includes full sound name mappings, so VB can map them via registry indexes and doesn't need the extra sound file anymore

5.5.1-SNAPSHOT+491

by kennytv on Oct 5, 2025
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64b454d Fix world border scale in 1.21.9->1.21.7

5.5.1-SNAPSHOT+490

by kennytv on Oct 5, 2025
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433f46e Handle DEBUG_SAMPLE_SUBSCRIPTION structure change in 1.21.9 ->1.21.7 (#1111)

5.5.1-SNAPSHOT+489

by kennytv on Oct 4, 2025
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fbe6a67 Fix inverted hidden components checks in 1.21.5->1.21.4 Fixes #1110

5.5.1-SNAPSHOT+488

by kennytv on Oct 4, 2025
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454e97c Don't remove font Closes #1109

5.5.1-SNAPSHOT+487

by kennytv on Oct 3, 2025
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fccea9b Throw out object components in 1.21.9->1.21.7 (#1108)

5.5.0

by kennytv on Oct 3, 2025
Download

Added 1.21.9 server support

  • Added dialog-style config section and fixed some issues with dialog emulation in 1.21.8->1.21.7 (by EnZaXD)
  • Fixed a regression in item handling across a few versions
  • Fixed sound handling in biome registry elements (by EnZaXD)
  • Fixed type reading in server links in 1.21.6->1.21.5 (by purpurcof)
  • Fixed stats mappings in 1.21.6->1.21.5 (by EnZaXD)
  • Fixed HIDE_ADDITIONAL_TOOLTIP not being set properly in 1.21.5->1.21.4 (by EnZaXD)
  • Fixed an error on Folia servers in 1.21.2->1.21 (by riku6460 and EnZaXD)
  • Fixed entity sound packets for the self player in 1.14->1.13.2 (by EnZaXD)

If you want to get larger version updates early, consider supporting me via https://viaversion.com/donate. See the previous update notes for more info.

5.4.3-SNAPSHOT+485

by kennytv on Sep 20, 2025
Download

99abab0 Update dependencies

5.4.3-SNAPSHOT+484

by kennytv on Sep 18, 2025
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f7656fb Always remap show_dialog/custom click events (#1104)

5.4.3-SNAPSHOT+483

by kennytv on Sep 18, 2025
Download

6a440aa Handle signed chat commands as well for custom click events (#1103)

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