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steam_api64.dll: download the file and fix the error

64-bit (x64) Steam (Valve) Scanned by antivirus

steam_api64.dll is a file of the Steam gaming platform (Valve), installed with each game that uses it. Its official description: “Steam Client API”, by Valve Corporation.

If it is missing or damaged, Windows displays for example: “The program can't start because steam_api64.dll is missing from your computer.” Two methods can fix the error, below.

Method 1 · quick · about 1 minute

Download only steam_api64.dll

Ideal if only this file is reported missing: you replace a single file, without reinstalling anything.

⇓ Download steam_api64.dll .zip file: the DLL + its instructions · downloaded 34,989 times
Version
04.28.51.07
Architecture
64-bit (x64)
Size
250.66 KB
Publisher
Valve Corporation

Then:

  1. Extract steam_api64.dll from the zip file and copy it to the folder of the program showing the error (where its .exe file is).
  2. Still getting the error? Also copy it to C:\Windows\System32 (64-bit Windows only), then restart.

64-bit version: it does not work with a 32-bit program. In that case, use method 2.

SHA-256: b8246e1a629b945fe526b24c3e4f002c4f6eb86aa1b5ed9744399f22a0d2ca9f · Check on VirusTotal · Product: Steam Client API

Method 2 · complete · official method · 5 to 15 minutes

Verify the game files in Steam

Steam compares the installed files with the original ones and automatically replaces those that are missing or damaged, in the right version.

  1. In Steam: Library › right-click the game › Properties › Installed Files › Verify integrity of game files.
  2. If your antivirus had deleted the file, restore it from quarantine, then launch the game again.

Complete guide: steam_api.dll error

Error messages related to steam_api64.dll

  • The program can't start because steam_api64.dll is missing.
  • Failed to load steam_api64.dll
  • Error loading steam_api64.dll. The specified module could not be found.

Why does this error occur?

  • Antivirus: the file was quarantined.
  • Incomplete installation or update of the game.
  • Wrong version: each game needs the version of steam_api64.dll shipped with it.

Files of the same family (Steam)

Frequently asked questions

Does the file on this page work for every game?

Not always: each game is shipped with its own version of steam_api64.dll. If the error persists after copying it, verify the files in Steam (method 2).

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