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