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How To Download & Install

To download ATLauncher you need to select the correct version. If you are running Windows then you should select the 'Windows (.exe)' button. If you are running a Mac, Linux or prefer to use the jar file, then you should select the 'Linux/Mac/Others (.jar)' button.

Put the exe/jar file in its own folder somewhere on your computer such as on your desktop or documents folder, making triple sure you place it in it's a new blank folder.

Once downloaded and placed somewhere it's as simple as opening it like you do any other application. Once ATLauncher is open you can then go to the 'Accounts' tab and enter in your Minecraft Username/Email and Password combination to add your account and start playing packs.

To play a pack just simply navigate to the 'Packs' tab and click 'New Instance' on any of the packs you want to play. Optionally give it a name and pick a version to install and click Install and the process will run through and by the end you will have a working instance which you can play in the 'Instances' tab.

For a more details walkthrough on how to download and install ATLauncher, please watch the Installation Video below. If you have any issues then please feel free to join our Discord to get some help.

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Installation Video
Using The Jar Or Exe?

Make sure you save the download to a new folder somewhere. Don't just place this on your desktop or run it from your downloads folder, it should be run from a folder of its own.

Do you have Java installed?

In order to use ATLauncher, you must have Java installed on your system. If you don't have Java installed, you can download and install Java 8 from here.

Changelog

New Features


  • Scan mods added to mods folder manually when clicking Edit Mods
  • Remove mods from instance that are no longer in filesystem
  • Show filename in context menu in Edit Mods dialog

Fixes


  • Files downloaded with 0 size will (almost) never be valid
  • When updating to a different MC version, show dialog about mods
  • Don't recheck CurseForge for mod info when not needed on reinstall
  • Do some null checking when checking for external pack updates

Misc


  • Add more exclusions to error reporting

Fixes


  • Issue launching instances

Fixes


  • Fix instance installer failing when fingerprinting fails [#436]
  • Fix not working on NAT64 networks [#434]
  • Fix some external pack actions UI hangs when servers slow [#435]
  • Fix getting default skin head causing exception

Misc


  • Add in automated UI testing
  • Cleanup of ProgressDialog

Fixes


  • Updating modpacks.ch instances not showing latest versions
  • Fix installs of pack with no mods causing issues

Fixes


  • Switch to DOCUMENT_MODAL for modals to make console always usable
  • Check all mods on CurseForge when installing that don't have it
  • Packs installed from CurseForge always showing as having updates
  • Debug mode tool panel still working when in debug mode
  • Always censor certain arguments when launching regardless of debug

Fixes


  • Fix downloading files causing multiple connections to open
  • Fix downloading files without hashes causing multiple connections
  • Fix downloading files causing connections to stay open
  • Fix downloading from a pool causing write issues when multiple dirs
  • Fix launch arguments having some oddities and missing Tricks arg
  • Fix instance installer progress being off in some places
  • Fix issue with extraArguments being null on instance conversion

Misc


  • Use hash/size for forge loaders from server
  • Switch to using own Forge mirror for installer and older libraries

New Features


  • Add in version field when exporting an instance [#419]
  • Allow importing packs from url [#425]
  • Add MultiMC instance importing [#426]
  • Allow setting which account to use in Instance settings
  • Add setting to hide pack name and version from Instance card
  • Add support for modpacks.ch (FTB) packs [#392]
  • Add suport for updating CurseForge packs [#393]
  • Add in pack browser for CurseForge packs [#394]
  • Sort mods in edit mods dialog in alphabetical order
  • Add setting to run automatic backups after launching an instance
  • Remove pagination on PacksTab, use infinite scroll instead

Fixes


  • Fix exported instances including disabled mods [#420]
  • Clean up old instance format [#422]
  • Fix some issues with remembering window size and position option [#423]
  • Fix instance installation not cancelling on download exceptions
  • Remove system info logging on startup
  • Remove bottom set of buttons on system pack cards
  • Fix add mods dialog not being wide enough
  • Fix potential NPE in PerformanceManager
  • Fix issue with opening wrong browser in linux [#424]
  • Fix long mod names in Add Mod dropdown not showing correctly [#427]
  • Fix install issues with older Forge versions
  • Fix share code on instance context menu showing when it shouldn't
  • Use native file picker when enabled (default for OSX) [#430]
  • Fix some dialogs not showing on top in non Windows [#428]
  • Fix saving existing Mojang account not removing password when unchecked
  • Clean up InstancesPanel components and remove Has Update button

Misc


  • Tweak building of artifacts
  • Make installs from CurseForge quicker
  • Use 31st December for showing date format options [#429]
  • Make base domain customisable more easily
  • Move default images into the jar
  • Allow accepting all ssl certs
  • Update SUPPORT.md


  • Add shift modifier to debug tool panel to log even more
  • Add responses to failed downloads at debug level 5
  • Add in warnings when XSTS token fails [#418]
  • Fix issue launching with MicrosoftAccount when using props


  • Add progress dialog when checking for Curse mod updates [#409]
  • Check all selected Curse mods for updates from Edit Mods [#409]
  • Allow ignoring OneDrive/Program Files warnings [#410]
  • Fix uninitialized DiscordRPC still trying to run things on close
  • Remove the version number from title bars
  • Add in High Tech Darkness theme by Mysticpasta1 [#413]
  • Fix reinstalling instances after renaming it using wrong folder [#411]
  • Fix logic in DownloadableFile for arm [#397]
  • Add support for Microsoft accounts [#415]
  • Add in warnings for old Instance types
  • Add in disabled/added mods to logs on crash [#417]


  • Remove Get Help button on system packs
  • Open folder after exporting an instance
  • Show export button after adding/editing mods
  • Warn user when running from program files
  • Don't start launcher when folder is not writable
  • Fix errors with Discord integration on launch when failed to init
  • Ignore more errors from error reporting