lwjgl.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like lwjgl.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like FileCoAuth.exe - to follow. These files were created so that multiple programs (eg. Minecraft Offline Files Installer) could share the same lwjgl.dll file, saving valuable memory allocation, therefore making your computer run more efficiently.
Unfortunately, what makes DLL files so convenient and efficient, also makes them extremely vulnerable to problems. If something happens to a shared DLL file, either it goes missing or gets corrupted in some way, it can generate a "runtime" error message. Runtime is pretty self-explanatory; it means that these errors are triggered when lwjgl.dll is attempted to be loaded either when Minecraft Offline Files Installer is starting up, or in some cases already running. Some of the most common lwjgl.dll errors include:
- Access Violation at address - lwjgl.dll.
- lwjgl.dll could not be found.
- Cannot find C:\Users\Tester\AppData\Roaming\.minecraft\bin\natives\lwjgl.dll.
- Cannot register lwjgl.dll.
- Cannot start Minecraft Offline Files Installer. A required component is missing: lwjgl.dll. Please install Minecraft Offline Files Installer again.
- Failed to load lwjgl.dll.
- The application has failed to start because lwjgl.dll was not found.
- The file lwjgl.dll is missing or corrupt.
- This application failed to start because lwjgl.dll was not found. Re-installing the application may fix this problem.
Your lwjgl.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Minecraft Offline Files Installer), or deleted by a malware infection. Furthermore, lwjgl.dll file corruption could be caused from a power outage when loading Minecraft Offline Files Installer, system crash while loading lwjgl.dll, bad sectors on your storage media (usually your primary hard drive), or quite commonly, a malware infection. Thus, it's critical to make sure your anti-virus is kept up-to-date and scanning regularly.