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