Go to Virus & threat protection > Protection history .
Select the file and choose Actions > Allow on device or Restore . 2. Set Up a Folder Exclusion
Failed to load OnlineFix64.dll from the list error code 126, virus? onlinefix64dll fix hot
Look for "OnlineFix64.dll" in the list of recently blocked items.
Click Add an exclusion and select the entire folder where your game is installed. Go to Virus & threat protection > Protection history
Because of its nature, antivirus software frequently flags it as a "false positive" and removes it, leading to the "missing file" error. Below is a comprehensive guide to fixing this issue and keeping your game running smoothly. 1. Check Your Antivirus Quarantine
Encountering a "Failed to load OnlineFix64.dll" error (often accompanied by or 4556 ) can be incredibly frustrating when you’re trying to launch a game. This file is a Dynamic Link Library (DLL) primarily used to bypass digital rights management (DRM) on platforms like Steam and Xbox, allowing for features like online multiplayer in modified games. Set Up a Folder Exclusion Failed to load OnlineFix64
To prevent your antivirus from deleting the file again as soon as you launch the game, you must create an exclusion.
The most common reason for this error is that or a third-party antivirus has quarantined the file.