libcf.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like libcf.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. Navicat 15 for MySQL (32-bit) (MySQL GUI)) could share the same libcf.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 libcf.dll is attempted to be loaded either when Navicat 15 for MySQL (32-bit) (MySQL GUI) is starting up, or in some cases already running. Some of the most common libcf.dll errors include:
- Access Violation at address - libcf.dll.
- libcf.dll could not be found.
- Cannot find C:\Program Files (x86)\PremiumSoft\Navicat 15 for MySQL\libcf.dll.
- Cannot register libcf.dll.
- Cannot start Navicat 15 for MySQL (32-bit) (MySQL GUI). A required component is missing: libcf.dll. Please install Navicat 15 for MySQL (32-bit) (MySQL GUI) again.
- Failed to load libcf.dll.
- The application has failed to start because libcf.dll was not found.
- The file libcf.dll is missing or corrupt.
- This application failed to start because libcf.dll was not found. Re-installing the application may fix this problem.
Your libcf.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Navicat 15 for MySQL (32-bit) (MySQL GUI)), or deleted by a malware infection. Furthermore, libcf.dll file corruption could be caused from a power outage when loading Navicat 15 for MySQL (32-bit) (MySQL GUI), system crash while loading libcf.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.