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ArcticLAUNCHER

Release notes

Arctic Launcher 0.4.6

October 13, 2026

What's new#

Fixed#

  • Fabric file repair now reaches the mod loader. After a missing-library crash, the repair could finish after checking only vanilla files, leaving a damaged Fabric or Mixin library in place. It now checks both stages and keeps the repair pending if preparation fails.
  • Play checks Fabric's key libraries automatically. Damaged copies with a published checksum are replaced even when an older launcher did not request a repair.
  • Missing-library crashes keep their actual explanation. A large modpack on a computer with little memory no longer causes this error to be relabeled as insufficient memory or disables its automatic repair. Memory warnings remain available before launch.

Download#

Windows: arctic-launcher-windows-x64.exe · macOS: arctic-launcher-macos.zip · Linux: arctic-launcher-linux-x64. The Windows files are signed (Open Source Developer Leyla Barlak, Certum).

SHA-256#

FileSHA-256
arctic-launcher-linux-x64601be043f78bd28e8ebeb0be1bfd81d2783867ebf357f579ac45e1e1e2d73529
arctic-launcher-macos982ec7583ffaa67c764871d6d9ded50f4481a046efd5b1eb83fde0eb0aa67aed
arctic-launcher-macos.zip42a6cf6fb4ec8cdf9513bbf367779fad9df30e01f2df47a19947cbe6102c2503
arctic-launcher-windows-x64.exe771901eb80a8c603f583f5b5f9602294241aa7d9b9c370b76fa458b77ec5389d
arctic-linux-x64ab0c0c824c52c3b1165de53525cbed5f672180e3a2cf7d7c69e589ba86898484
arctic-macos93ec516837cd0639f60d6471c2f217d8ad92dc26fdcbeb044e258bb9716fb804
arctic-windows-x64.exe8e0f116248947a197ac8bb02605582c6e955c3773288a65373677eea55fc7a26

Check a download: Get-FileHash <file> (PowerShell) or sha256sum -c SHA256SUMS.txt (Linux).

Full Changelog: https://github.com/brksfrb/arctic-launcher/compare/v0.4.5...v0.4.6 (opens in a new tab)

Download Arctic LauncherAssets & checksums on GitHub (opens in a new tab)