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Hearts of Iron IV
Hearts of Iron IV
SimulationStrategy
Paradox Development Studio · Paradox Interactive·$49.99
Nov 27, 2025 · 8mo ago

NCNS Patch 1.17.1.1

AI summary3mo

Patch 1.17.1.1 focuses on bug fixes for Chinese warlords, AI naval taskforce management, and corrections to Italian naval focuses.

Buffs2

  • ItalyForza Navale Especiale:The Forza Navale Especiale focus now correctly increases division capacity for naval invasions by 2.2
  • Factory 617The MIO trait for Factory 617 now correctly applies its bonuses to Modern Tanks.

Bug fixes3

  • Chinese Warlords
    • Approach Japan:Fixed an issue where warlords would not receive the correct decisions after completing the 'Approach Japan' focus.
    • Xian Incident:Fixed an edge case where the Xian Incident could trigger incorrectly from warlord decisions if the United Front was formed by the PRC.
  • JapanThe Chrysanthemum Throne:Fixed a bug where Hirohito would not become the leader if the NCNS DLC was disabled.Hirohito

Other changes1

  • AIAI will no longer split ships into many tiny taskforces and will now correctly assign taskforces to training during peacetime.

subjects affected (5)

tap to see balance history

How did this patch land?
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official notes
Hearts of Iron IV · Nov 27, 2025

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Patch history

see all 7

  1. HOI IV - Open Beta Summer Edition™Jul 6, 2026 · 1mo

    The Open Beta Summer Edition focuses on broad game re-balancing, specifically targeting Regimental Support companies, Line Artillery viability, and naval positioning mechanics.

    +1813
  2. Hotfix 1.19.0.1Jun 12, 2026 · 2mo

    Hotfix 1.19.0.1 addresses a specific crash during the Spanish Civil War and a UI bug with DLC icons.

  3. HOI IV - Open Beta Update VMay 13, 2026 · 3mo

    Open Beta Update V focuses on AI naval behavior improvements, stability fixes for large-scale naval battles, and various quality-of-life adjustments to lend-lease and supply tooltips.

    +4
  4. PEace For Our Time | Patch 1.18.1Apr 29, 2026 · 3mo

    A hotfix update focusing on the Czech and Slovak national focus trees, correcting several localization errors, and improving AI behavior for Germany and Slovakia.

    +7
  5. Warships of the Pacific - Hotfix, 1.17.5.2Mar 26, 2026 · 4mo

    A small hotfix focusing on UI and visual bugs within the division designer and tank pool displays.

  6. (Very small) Hotfix - Patch 1.17.4.1Feb 25, 2026 · 5mo

    A small hotfix addressing a bug where research bonuses were permanently active instead of being claimed.

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