1.19.4|Oct 27, 2026
View on Steam↗Hearts of Iron IV | QoL Patch Notes 1.19.4
4/5 Significant
The massive 'War Effort' update introduces Automated Resource Trading, notification grouping to combat spam, and a new mini-map for Focus Trees.
Key Changes
- 1Added Automated Resource Trading with factory assignment and priority settings
- 2Implemented notification grouping to stop AI spam for CTA and Military Access
- 3Added a Repair Priority queue in the Construction window for better micro-management
- 4Introduced a mini-map for the National Focus tree to improve navigation
- 5Added the ability to Recall Volunteer forces from active conflicts
- 6Implemented Automatic Diplomatic responses for common requests like Airbase Access
- 7Major balance overhaul for Land Doctrines and combat simulation
- 8Overhauled the Japanese Imperial Faction demand system with cooldowns and scaled penalties
- 9Added Intelligence Agency Upgrade queuing and Fleet composition saving
- 10Fixed numerous Focus Tree bugs for France, Siam, Germany, and the Baltics
All Changes
⚙️Gameplay Systems(10)
- newResource Trading: Added Automated Resource Trading, allowing players to assign factories and prioritize specific resources.
- newConstruction: Introduced a Repair Priority queue in the Construction window with manual override capabilities.
- newVolunteers: Added the ability to Recall Volunteer forces from conflicts (provided they aren't encircled) with a re-send cooldown.
- newIntelligence Agency: Added Intelligence Agency Upgrade queuing.
- newFleets: Fleet compositions can now be saved and are session persistent.
- newResource Trading: Shift-clicking insufficient resources now allows for immediate automatic importing.
- buffAir Wings: Air wing bonuses now apply instantly instead of waiting for a game tick.
- changeLand Doctrines: Implemented a large amount of balance changes for doctrines and combat simulation from the Open Beta.
- fixShips: Removed an exploit where ships could be force-retreated using the Distribute Taskforces button.
- fixAir Wings: Fixed an exploit where halted air wings could acquire the range of a destination base without transferring.
🖥️UI/UX(8)
- newNotifications: Added notification grouping to reduce spam from Call to War and Military Access requests.
- newFocus Tree: Added a mini-map to the National Focus tree for easier navigation.
- newCareer Profile: Added 38 new profile icons for the Career Profile.
- newMap: Added a toggle to color subjects the same color as their overlords on the map.
- newPolitical Advisors: Added category filters to the Political Advisors window.
- newMultiplayer Pings: Pings are now visible when volunteering and display the flag of the sending nation.
- newResearch: Added keyboard shortcuts to the Research window to bypass the details screen and select next slots.
- fixFlags: Fixed 103 flags that were missing their small variant icons.
🤝Diplomacy(4)
- newDiplomacy: Added Automatic Diplomatic responses to specific requests (e.g., always accepting Airbase Access).
- fixCall to War: Resolving one Call to War now automatically resolves other calls to the same war.
- changeDocking Rights: Fleets based in foreign ports are now automatically moved to a valid home base when docking rights end.
- fixAlliances: Fixed an issue where allies and puppets would sometimes ignore accepted calls to war.
🗺️Factions & Focus Trees(10)
- changeJapan: Overhauled Japanese Imperial Faction demands: added cooldowns, fixed counters, and scaled penalties for failure.
- nerfManchukuo: Fixed Manchukuo having 6 research slots in the 1939 bookmark.
- fixSiam: The Phayap Army now joins existing wars as a co-belligerent instead of declaring separate, unwinnable wars.
- buffMozambique: Increased Mozambique's population significantly to 4.25M.
- fixFrance: Fixed the French 'Division Cuirassée' focus to properly target the Char B1 design and provide tank rewards.
- fixGermany: Fixed an issue where Germany would not give Reichskommissariat states in peace deals.
- fixPoland: Poland's 'Proclaim Slavic Unity' now correctly grants a core on Lubusz.
- fixBritish Raj: Fixed the Raj focus tree preferring to place experimental facilities in Baghdad instead of Delhi.
- fixEthiopia: Fixed several issues with Ethiopia's decision to take Djibouti.
- fixUruguay: Fixed Uruguay being incorrectly locked out of joining factions.
🛠️Stability & Performance(5)
- fixModding: Fixed a Crash to Desktop (CTD) caused by typos in shared focus IDs within mods.
- fixStability: Fixed a UI race-condition crash in the construction view.
- fixMultiplayer: Fixed an Out of Sync (OOS) error occurring when a scientist had more than 2 skills.
- fixStability: Fixed a crash when hovering over a state in the ask/give diplomacy menu.
- fixStability: Fixed a CTD occurring when scrolling the map while selecting deployment targets for subject templates.
Summary
Update 1.19.4, titled the 'War Effort,' is a major Quality of Life overhaul for Hearts of Iron IV. It focuses on reducing micro-management through automated trading and diplomatic responses while introducing highly requested features like a Repair Priority queue and the ability to recall volunteers. The patch also incorporates balance changes from the 'Summer Edition' Open Beta, specifically targeting doctrines and combat simulation, alongside a massive list of fixes for national focus trees and game stability.