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Hearts of Iron IV
Hearts of Iron IV
SimulationStrategy
Paradox Development Studio · Paradox Interactive·$49.99
Feb 25, 2026 · 2mo ago

(Very small) Hotfix - Patch 1.17.4.1

AI summary2w

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

Bug fixes1

  • Research BonusesFixed a bug where research bonuses were not being claimed and remained permanently active, preventing unintended stacking of bonuses.

subjects affected (1)

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How did this patch land?
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official notes
Hearts of Iron IV · Feb 25, 2026
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Patch history

see all 5

  1. HOI IV - Open Beta Update V
    May 13, 2026 · 1w
    +4
  2. PEace For Our Time | Patch 1.18.1
    Apr 29, 2026 · 3w
    +7
  3. Warships of the Pacific - Hotfix, 1.17.5.2
    Mar 26, 2026 · 1mo
  4. NCNS Patch 1.17.1.1
    Nov 27, 2025 · 5mo
    +2

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