Hearts of Iron IV Patch Notes & Updates (2026)

Every Hearts of Iron IV patch in one place — latest version highlighted, older patches permanently archived. Player-perspective breakdowns of bug fixes, crash solutions, balance changes, and known issues.

📂 Strategy🖥️ PC📋 4 patch notes

⚡ Latest Hearts of Iron IV Patch

LatestPatch 6.4patch

Hearts of Iron IV Patch 6.4 Notes | Bug Fixes & Changes

Published April 26, 2026

Hearts of Iron IV Patch 6.4 patch notes with a player-perspective breakdown. Bug fixes, crash solutions, balance changes, and known issues after the 2026-04-26 2026 update.

Read full patch notes →

📚 Archived Patch History

Old patches are kept permanently — they never get deleted. Older versions stay searchable for reference.

ArchivedPatch 6.3

Hearts of Iron IV Patch 6.3 Notes

Apr 8, 2026

Hearts of Iron IV Patch 6.3 patch notes with a player-perspective breakdown. Bug fixes, crash solutions, balance changes, and known issues after the 2026-04-08 2026 update.

ArchivedPatch 5.2

Hearts of Iron IV Patch 5.2 Notes

Feb 23, 2026

Hearts of Iron IV Patch 5.2 patch notes with a player-perspective breakdown. Bug fixes, crash solutions, balance changes, and known issues after the 2026-02-23 2026 update.

ArchivedPatch 5.1

Hearts of Iron IV Patch 5.1 Notes

Jan 16, 2026

Hearts of Iron IV Patch 5.1 patch notes with a player-perspective breakdown. Bug fixes, crash solutions, balance changes, and known issues after the 2026-01-16 2026 update.