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This has already been the de-facto standard for quite a while now, but figured it would be a good idea to properly formalise it and make it clear for everyone. TL;DR: You can ask and offer support for Forge on any MC version, as long as you're not demanding it from staff and can accept that older versions may receive less attention due to people moving on to newer, shinier things. Tiered support policy There are now essentially three tiers of support: full, legacy and minimal. Full support This tier has dedicated channels for help on the Discord, gets priority for documentation, new features and bugfixes, and is generally considered the main focus for Forge development and support. Triage actively ports and backports things as needed for versions within this tier where time allows. The MC versions covered by this follows the existing "LTS" system. In other words, the latest MC version and select versions before it are covered by this tier. We recommend people consider using the newest version possible, as it's likely to be fully supported for longer. Exact versions covered under the full support tier can be found near the top of the FAQ. Legacy support This tier is for older versions of MC that are no longer covered by the full support tier. This tier gets less attention, but is still supported to some extent. To be clear, this is not a "no support" tier, but it is not the main focus. You're welcome to ask for help, submit PRs and help out, but please be aware that you may not get a response as quickly as these versions are generally not as popular anymore and may not have as many people around to help. Staff may still choose to work on these legacy versions and help people, but please don't demand it from them. Please note that due to the nature of the old toolchains used for building legacy versions, developing mods using the default MDK may not work. We also cannot easily publish updates to some of these old versions without your help - if you're interested in fixing this, please reach out to us. Minimal support This is rare and usually only applies to versions of MC where there's no legitimate reason to be using them. A real-world example of this is 1.20.3, which had a data loss bug that was fixed in 1.20.4 shortly after. All mods made for 1.20.3 work on 1.20.4, so there's no reason to use 1.20.3. We will help you update to the fixed version instead, but that's about it.

This FAQ has many guides and solutions - reading this before asking for help could save you a lot of time, as it accounts for the vast majority of issues people run into that we're aware of but can't fix on our end. Supported versions and platforms We only support Forge here. We cannot help you with Fabric, Spigot, etc... We support all versions under the tiered support policy. Full support for 26.1, 1.21.11, 1.21.10, 1.21.8, 1.21.5, 1.21.4, 1.21.3, 1.21.1, 1.20.6, 1.20.4 and 1.20.1 Legacy support for all other versions Minimal support for select versions (e.g. 1.20.3 - use 1.20.4 instead) More details here. Rules Piracy (aka "cracked launchers") and cheats (aka "PvP clients", "x-ray mods", etc...) are strictly forbidden here. When you need help, please always make a new thread. Do not post in old support threads. When making a new thread, you must include a link to your log on https://pastebin.com or https://paste.ee. Instructions on where to find this and how to upload it are in this forum post. Exit/error codes Here's a list of exit codes and what they mean: Error code 0: Someone clicked "Quit game" and the game closed successfully Error code 1 and -1: The game crashed, refer to the log and/or crash report for details Error code -1073741819: A game library crashed. Update your drivers and make sure you're using the right Java version Where can I find the debug.log and crash report? Official Minecraft launcher Spoiler CurseForge app Spoiler MultiMC/PolyMC/Prism launcher Spoiler Where can I find the installer log? Spoiler Where can I find the launcher log? Most of the time you don't need to share this, so only share it when asked by a support volunteer or when you're unable to find any debug.log or crash report. Official Minecraft launcher Spoiler CurseForge app Spoiler What version of Java do I need? | Minecraft version | Forge version | Java version ||-------------------|---------------|--------------|| 1.20.6 or newer | 50.x or newer | 21 || 1.18 - 1.20.4 | 38.x or newer | 17 || 1.17.1 | 37.x | 16 || 1.16.5 or older | 36.x or older | 8 | How do I install Java? Windows Spoiler macOS Spoiler Linux Spoiler How do I install the Forge client to the official Minecraft Launcher? Spoiler How do I install the Forge server? Spoiler Where can I find the forge.jar to start my server? Spoiler Forge immediately crashes on launch without any mods installed, how do I fix it? Spoiler Where can I find Forge mods? https://www.curseforge.com/minecraft/search?page=1&gameFlavorsIds=1 Make sure you download the right version of a mod for your Minecraft version. My game is lagging, how can I find the culprit? Spoiler How do I update my drivers? Spoiler

Posting this because I spent more time on it than I’d like to admit, and I’ve seen others hit the same wall. The problemMy custom block registered correctly, appeared in the creative tab, but rendered as a missing texture cube. No errors at runtime, just a purple-black block. What I checked firstRegistry name was correct Blockstate JSON existed Model JSON paths looked fine Textures were in the right folder Everything looked correct. The actual issueThe problem was a mismatch between the blockstate JSON and model file names. Example mistake: blockstates/my_block.json models/block/myblock.json Forge does not warn you when these names don’t match exactly. The fixMake sure naming is consistent everywhere: blockstates models/block models/item registry name Also ensure that: JSON files are lowercase no extra underscores or hyphens exist resource reload cache is cleared Restarting the client after fixing resource paths helped immediately. TakeawayIf your block exists but renders wrong, the issue is almost always: naming mismatch resource path typo cached resource reload Hopefully this saves someone else an hour.

Unfortunately, it seems that Invision has decided that everything is locked down and no longer customizable. Their attitude to anyone who wants to edit anything is 'Just accept it we know best and screw you for even insinuating that you want to customize your own site' So there isn't much we can do about the layout of actual features. Best bet for the editor is that psudo markdown works, so typing ` around words make code blocks. Only options is to start writing bespoke modifications to the forum's php code itself, which I really don't want to do. I would of stayed on v4 but the version of PHP that it supports is going EOL and Invision has stated they have no intentions of upgrading it. They also removed the central community for finding plugins/community addons. Overall it is my feeling that they are intentionally trying to kill off self-hosting communities by removing features and locking things down, in an effort to force everyone into using their paid hosting services. My HOPE is that someone in the overall forum community will write an exporter for Invision to something like SMF. Which is what we were originally on before old team members decided enterprise software is better.

For some reason I can't place anything inside smithing table on forge 1.20.1, it doesn't show up as a recipe for netherite either in the JEI menu.

Forge for 1.21.6 and newer uses EventBus 7, which is a major rewrite. You can read the migration guide here, this explains how to cancel events.

This isn’t about features or content size, but polish. From a player and developer perspective, here’s what consistently separates good mods from great ones. Performance awarenessHigh-quality mods avoid ticking when unnecessary, cache results, and respect server performance. Consistent behaviorItems behave predictably, configs work as expected, and nothing breaks silently. Clean UI/UXMenus don’t lag, text is readable, tooltips explain behavior without external documentation. Compatibility mindsetGood mods avoid hard conflicts, use proper tags, and integrate with existing systems instead of overriding them. DocumentationEven minimal README files or in-game descriptions dramatically improve user experience. None of these are flashy, but together they’re what make a mod feel professional. Interested to hear what others prioritize.

Thats mad lol

Hello friends! i downloaded a modpack(Better Mc) from forge and wanted to add some extra mods i wanted. i cut down a ton I had added to try and make it work because i was getting the "lost connection" screen anytime i would try to load into the single player world. and finally after much trial and error the game seemed to be running fine, but now anything i die and respawn the game crashes. i was wondering if anyone could give me a hand and point me in the direction of what mods could be leading to the crashes. i would be very thankful for some help! latest log: https://docsend.com/view/tsbud6hrv8utbit3 modlist: https://docsend.com/view/j6jdpazzmenixpbn crash report:https://docsend.com/view/fqr7f4huunjr8bqj

Thanks to your help, i spotted the problem. It was a version mismatch, i just solved the mess. Thanks a lot XD

If you need instant help, I would suggest discord. Forums don't usually have people sitting waiting for someone looking for help. You should also create your own thread, instead of posting on a really ancient dead one. I also noticed that you're running Neoforge, which is not supported here. I would suggest looking for their discord, I'm sure they have a link on neoforged.net

From what I’ve seen, folks usually do a “two‑layer” sun by drawing two textured quads (one with an alpha/mask) and layering them, and for a custom sky a tileable sky map in your assets works best.

Add the new crash-report - maybe there are more broken toml files

Delete the forge-client.toml in your config folder and test it again

While testing and deleting mods i figured out it was a vehicle mod i installed it required a player model animation mod too deleting both of them solved my problem thanks so much tho

In the future I do plan on adding optional OAuth to the new launcher in ForgeGradle 7. But yes, using --username and offline mode is a good workaround to not using accounts in the development environment, especially considering that the server is on LAN.

Thanks for the help! Removing lithostiched (& by proxy Tectonic) as well as Supplementaries did the trick!

Try replacing implementation with minecraftLibrary. Dependencies in the minecraftLibrary configuration are added to your compile and runtime classpaths in ForgeGradle 6.

Thanks, I've now installed a slightly newer version and the server is at least starting up now.

thx

it work now i just put vinery in 1.4.39 and it work's thanks for the help

ok got it to work did have to remove the configs and almost reinstall the mod thanks

oh wait, i just launched it. it didn't crash this time. strange... 🤔

I found another reddit thread that said updating both bclib and better end to the most recent versions for 1.20.1 fix it, and it worked.

Yes, but this modpack is adding fabric mods via Sinytra Connector

Crash Report: https://mclo.gs/cqfHEI7 Latest.log: https://mclo.gs/1OLLfBs

I completely deleted curse forge and the Minecraft profiles off of my pc hard drive and reinstalled curse forge and now it works again so i must of have a corrupt file somewhere. Thanks for the help though.

Same issue without voicechat?

It works now, thx!

Okay so I went to a different version of that mod and it booted right up, thank you

Alright, so when I try to play within the forge app, it doesn't work, but when I put forge on my minecraft launcher and add the mods it works, Thanks for the help

Backup and delete the config folder

You are Goated bro, the pack works great now. thanks a million.

Did you also add Embeddium? So make a test just with Embeddium + Oculus

Just found a fix, searched up the error and it ended up being redirector loading chunks weirdly. Thank you for all the support.

Thanks for the quick reply. It worked! Thank you!

Add the crash-report or latest.log (logs-folder) with sites like https://mclo.gs/ and paste the link to it here

The config of UnionLib is invalid Delete the config of it (config folder) - if there is no change, try other builds of UnionLib

I got it to work! For some reason it was Create Steam & Rails crashing it.

This time it really seems to work! you're my saviour. Thank you a lot for your help and have a great day!

Dawnera is not working on a server - remove it and dawnera_delight

Add crash-reports with sites like https://mclo.gs/ Remove the mod watut

omg it worked, thank you so much!!

Remove the mod niftyShipsBiomesOPlenty-FORGE

Found out that the Culprit is "Create Stuff & Additions" thank you lots this has been doing my head in.

ty!

Worked, Thanks

Thank you! Ended up finding out the issue was with pehkui

Update your AMD/ATI drivers - get the drivers from their website - do not update via system

Hello! I think what you made is awesome! Sadly, I do not have discord. But I hope we can become great friends later on! Have a blessed weekend!