AxInterop.WMPLib.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like AxInterop.WMPLib.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like DiagTrackRunner.exe - to follow. These files were created so that multiple programs (eg. Free MP4 to MP3 Converter) could share the same AxInterop.WMPLib.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 AxInterop.WMPLib.dll is attempted to be loaded either when Free MP4 to MP3 Converter is starting up, or in some cases already running. Some of the most common AxInterop.WMPLib.dll errors include:
- Access Violation at address - AxInterop.WMPLib.dll.
- AxInterop.WMPLib.dll could not be found.
- Cannot find C:\Users\Tester\AppData\Roaming\MP4 to MP3 Converter\AxInterop.WMPLib.dll.
- Cannot register AxInterop.WMPLib.dll.
- Cannot start Free MP4 to MP3 Converter. A required component is missing: AxInterop.WMPLib.dll. Please install Free MP4 to MP3 Converter again.
- Failed to load AxInterop.WMPLib.dll.
- The application has failed to start because AxInterop.WMPLib.dll was not found.
- The file AxInterop.WMPLib.dll is missing or corrupt.
- This application failed to start because AxInterop.WMPLib.dll was not found. Re-installing the application may fix this problem.
Your AxInterop.WMPLib.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Free MP4 to MP3 Converter), or deleted by a malware infection. Furthermore, AxInterop.WMPLib.dll file corruption could be caused from a power outage when loading Free MP4 to MP3 Converter, system crash while loading AxInterop.WMPLib.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.