Open Windows Security (or your third-party antivirus), go to Protection History , and look for a recently blocked file. Select Actions > Restore .
Follow these steps to restore the file and get the game running. 1. Check Antivirus Quarantine
Right-click on and select Properties .
Understanding the root cause of the error helps you choose the correct fix and prevent it from happening again in the future. The most common reasons include: call of duty infinite warfare steamapi64rdll missing work
Sometimes the game is fine; the Steam client has lost its ability to talk to the game.
Right-click on and select Properties . Go to the Installed Files tab. Click Verify integrity of game files .
The steam_api64r.dll file is a Dynamic Link Library file used by the 64-bit version of Call of Duty: Infinite Warfare to communicate with the Steam client. It handles features like achievements, multiplayer authentication, and digital rights management (DRM). When the game launcher cannot locate this file in the installation directory, it crashes immediately and displays the error message. Step 1: Restore the File from Antivirus Quarantine Open Windows Security (or your third-party antivirus), go
Are you having trouble finding the in your specific antivirus program?
Once you have the game running, take these steps to avoid repeating the error:
The most common reason this file "disappears" is that your antivirus (like Windows Defender) flagged it as a false positive and moved it to quarantine. Windows Security or your third-party antivirus. Protection History Quarantine steam_api64.dll . If it's there, select The most common reasons include: Sometimes the game
The SFC tool is a built-in Windows utility that scans for and repairs corrupted system files. Since gaming relies heavily on system stability, running this scan can eliminate background issues.
To prevent future deletions, add the entire Call of Duty: Infinite Warfare installation folder to your antivirus . Method 2: Verify the Integrity of Game Files
If you own the game legally on Steam, the fastest and safest fix is to let Steam scan your installation directory. It will automatically detect the missing steam_api64.dll file and redownload a clean copy. Open your and navigate to your Library .

WARNING The following website, including all webpages, links, images and videos, display sexually explicit material. Only consenting adults are authorized beyond this page. If you are a minor (under the age of 18 years old or 21 years old where 18 isn't the legal age of majority), if sexually explicit material offends you or if it's illegal to view such material in your community, or if you disagree with the following statements in any way, you MUST leave by clicking EXIT below. By ENTERING this site, you irrevocably agree to these statements: You are an adult in your community and are at least 18 years old (21 in those communities where required). You will not expose, or allow others to expose minors to the sexually explicit content contained on this website. You believe that sexually explicit material is not offensive or obscene, and affirm that sexually explicit material is not deemed to be obscene or illegal in the community in which you will view these materials. You further affirm that you wish to view such materials and that no other person has coerced you into doing so. You will use the material available on this website for your own personal use and will not sell, distribute, give or make available the content on this website to anyone. You will take the appropriate steps in order to make sure no minor is able to view the content available on this site. You understand that if you disagree with any of the prior statements, you are not permitted to enter this website and to view its contents. By entering this website, you acknowledge that you have read this agreement, understood it and agree to be bound by it.