AppDefaultRegister.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like AppDefaultRegister.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like MpSigStub.exe - to follow. These files were created so that multiple programs (eg. Freemake Video Converter) could share the same AppDefaultRegister.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 AppDefaultRegister.dll is attempted to be loaded either when Freemake Video Converter is starting up, or in some cases already running. Some of the most common AppDefaultRegister.dll errors include:
- Access Violation at address - AppDefaultRegister.dll.
- AppDefaultRegister.dll could not be found.
- Cannot find C:\Program Files (x86)\Freemake\Freemake Video Converter\FileAssociationTool\AppDefaultRegister.dll.
- Cannot register AppDefaultRegister.dll.
- Cannot start Freemake Video Converter. A required component is missing: AppDefaultRegister.dll. Please install Freemake Video Converter again.
- Failed to load AppDefaultRegister.dll.
- The application has failed to start because AppDefaultRegister.dll was not found.
- The file AppDefaultRegister.dll is missing or corrupt.
- This application failed to start because AppDefaultRegister.dll was not found. Re-installing the application may fix this problem.
Your AppDefaultRegister.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Freemake Video Converter), or deleted by a malware infection. Furthermore, AppDefaultRegister.dll file corruption could be caused from a power outage when loading Freemake Video Converter, system crash while loading AppDefaultRegister.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.