ESN.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like ESN.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like DTAgent.exe - to follow. These files were created so that multiple programs (eg. DAEMON Tools) could share the same ESN.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 ESN.dll is attempted to be loaded either when DAEMON Tools is starting up, or in some cases already running. Some of the most common ESN.dll errors include:
- Access Violation at address - ESN.dll.
- ESN.dll could not be found.
- Cannot find C:\Program Files\DAEMON Tools Pro\Lang\ESN.dll.
- Cannot register ESN.dll.
- Cannot start DAEMON Tools. A required component is missing: ESN.dll. Please install DAEMON Tools again.
- Failed to load ESN.dll.
- The application has failed to start because ESN.dll was not found.
- The file ESN.dll is missing or corrupt.
- This application failed to start because ESN.dll was not found. Re-installing the application may fix this problem.
Your ESN.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with DAEMON Tools), or deleted by a malware infection. Furthermore, ESN.dll file corruption could be caused from a power outage when loading DAEMON Tools, system crash while loading ESN.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.