Since antivirus software is the #1 culprit, this should be your first step.
For Windows Defender users: Go to Virus & threat protection > Protection history > Look for "Threat quarantined" > Click Actions > Restore.
Steam can check your game and automatically replace any missing or damaged files.
If you're playing on Steam:
This process will check for and replace any missing or corrupted game files.
The Steam Overlay hooks directly into steam-api64r.dll. If the overlay conflicts with your graphics driver, the DLL may fail to load.
If the file is simply corrupted or missing, Steam can replace it automatically. steam-api64r.dll missing mortal kombat x
Note: If Steam fails to download the file, move to Method 3.
Few things are more frustrating than settling in for a gaming session only to be met with a cryptic error message. If you’re trying to launch Mortal Kombat X and see a pop-up saying:
“The program can’t start because steam-api64r.dll is missing from your computer.” Since antivirus software is the #1 culprit, this
Don’t worry. You don’t need to buy a new PC or reinstall Windows. This is a common, fixable issue. Let’s break down what this file is and exactly how to get your game running again.
If none of the above work, consider these last resorts: