lang.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like lang.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. File Viewer Lite) could share the same lang.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 lang.dll is attempted to be loaded either when File Viewer Lite is starting up, or in some cases already running. Some of the most common lang.dll errors include:
- Access Violation at address - lang.dll.
- lang.dll could not be found.
- Cannot find C:\Program Files (x86)\File Viewer Lite\lib\lang.dll.
- Cannot register lang.dll.
- Cannot start File Viewer Lite. A required component is missing: lang.dll. Please install File Viewer Lite again.
- Failed to load lang.dll.
- The application has failed to start because lang.dll was not found.
- The file lang.dll is missing or corrupt.
- This application failed to start because lang.dll was not found. Re-installing the application may fix this problem.
Your lang.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with File Viewer Lite), or deleted by a malware infection. Furthermore, lang.dll file corruption could be caused from a power outage when loading File Viewer Lite, system crash while loading lang.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.