How to troubleshoot steam_api.dll is missing error in One Piece: Pirate Warriors 4

One of the major frustrations of PC gamers is the infamous "[certain.dll] file is missing" type of errors. Often when install One Piece: Pirate Warriors 4 and try to play it, you will encounter this steam_api.dll file missing error. In this post, we will learn how to diagnose steam_api.dll related error in One Piece: Pirate Warriors 4. Once we have diagnosed steam_api.dll error in One Piece: Pirate Warriors 4, we will look at various ways to fix it.

  • Developer: Koei Tecmo Games, Omega Force, Koei Tecmo
  • Publisher: BANDAI NAMCO Entertainment
  • Release Date: March 26, 2020

What You Need to Run One Piece: Pirate Warriors 4

Minimum One Piece: Pirate Warriors 4 Requirements

  • Operating System: Windows 10, 64-bit or later
  • Processor: Intel Core I5-2300 / AMD FX-4350
  • RAM/Memory: 8 GB RAM
  • DirectX Version: Version 11
  • Disk Space: 40 GB available space
  • Display Card: Nvidia GeForce GTX 660 / AMD Radeon HD 7870,2GB

How to Fix steam_api.dll is missing error in One Piece: Pirate Warriors 4

Download & install DirectX

DirectX is a bunch of APIs mixed together that handle multimedia related tasks such as playing high fi video games, video and 3D content. One of the basic steps to fix steam_api.dll is missing error in One Piece: Pirate Warriors 4 is to just download and install the version of DirectX that is required by One Piece: Pirate Warriors 4.

Typically, DirectX 9 or 11 do just fine for most video games.

Download DirectX9 here.

Often, just downloading and installing DirectX will solve your problem. However, if you are still facing the problem. Let's move on the next step, shall we?

Download & install steam_api.dll

Another way of fixing steam_api.dll is missing error in One Piece: Pirate Warriors 4 is to simply download steam_api.dll file as per your PC configuration and install it in Windows\System32.

To download file from our secure servers, go to the following page: fix steam_api.dll related errors

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