c2rui.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like c2rui.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like mighost.exe - to follow. These files were created so that multiple programs (eg. Microsoft Word 2013) could share the same c2rui.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 c2rui.dll is attempted to be loaded either when Microsoft Word 2013 is starting up, or in some cases already running. Some of the most common c2rui.dll errors include:
- Access Violation at address - c2rui.dll.
- c2rui.dll could not be found.
- Cannot find C:\Program Files\Microsoft Office 15\root\client\c2rui.dll.
- Cannot register c2rui.dll.
- Cannot start Microsoft Word 2013. A required component is missing: c2rui.dll. Please install Microsoft Word 2013 again.
- Failed to load c2rui.dll.
- The application has failed to start because c2rui.dll was not found.
- The file c2rui.dll is missing or corrupt.
- This application failed to start because c2rui.dll was not found. Re-installing the application may fix this problem.
Your c2rui.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Microsoft Word 2013), or deleted by a malware infection. Furthermore, c2rui.dll file corruption could be caused from a power outage when loading Microsoft Word 2013, system crash while loading c2rui.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.