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Stellaris 4.3.1 hotfix release (checksum f646)

Paradox posted "Stellaris 4.3.1 hotfix release (checksum f646)" as a Community Announcement on the Stellaris Steam page on Mar 19, 2026 (13:36 UTC). The text below is theirs, unchanged; the label "Patch notes" is ours, from the title.

The announcement

Paradox's text as published on Steam. Pictures stay on Steam's server; only their addresses are linked.

Picture in the original post: open on Steam's server

Hello,

A hotfix patch has been readied, aiming to fix a few issues plus add a clarifying step for players looking to resume their pre patch save games.

4.3.1 should now be available via Steam and GOG, with MS Store following as soon as possible.

Please find the change log below.

4.3.1 Hotfix Patch Notes

Improvement

  • The Resume button on the launcher will no longer load incompatible saves, potentially ruining them. It will instead send you to the Main Menu.

  • Updated save compatibility to show the incompatible save icon for all pre-4.3 save games.

Bugfix

  • Avian portrait granted by Paradox Account log in has returned.

Stability and Performance

  • Fixed corruption in modifier name generation that sometimes caused CTD when generating OOS logs.

Carry on!

Source: store.steampowered.com/news/app/281990. Not affiliated with Paradox Interactive.

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