cficos2.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like cficos2.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. C-Free) could share the same cficos2.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 cficos2.dll is attempted to be loaded either when C-Free is starting up, or in some cases already running. Some of the most common cficos2.dll errors include:
- Access Violation at address - cficos2.dll.
- cficos2.dll could not be found.
- Cannot find C:\Program Files (x86)\C-Free 5\cficos2.dll.
- Cannot register cficos2.dll.
- Cannot start C-Free. A required component is missing: cficos2.dll. Please install C-Free again.
- Failed to load cficos2.dll.
- The application has failed to start because cficos2.dll was not found.
- The file cficos2.dll is missing or corrupt.
- This application failed to start because cficos2.dll was not found. Re-installing the application may fix this problem.
Your cficos2.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with C-Free), or deleted by a malware infection. Furthermore, cficos2.dll file corruption could be caused from a power outage when loading C-Free, system crash while loading cficos2.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.