ucpdav1.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like ucpdav1.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 ucpdav1.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 ucpdav1.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 ucpdav1.dll errors include:
- Access Violation at address - ucpdav1.dll.
- ucpdav1.dll could not be found.
- Cannot find C:\OpenOfficePortable\App\openoffice\program\ucpdav1.dll.
- Cannot register ucpdav1.dll.
- Cannot start OpenOffice.org Portable. A required component is missing: ucpdav1.dll. Please install OpenOffice.org Portable again.
- Failed to load ucpdav1.dll.
- The application has failed to start because ucpdav1.dll was not found.
- The file ucpdav1.dll is missing or corrupt.
- This application failed to start because ucpdav1.dll was not found. Re-installing the application may fix this problem.
Your ucpdav1.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, ucpdav1.dll file corruption could be caused from a power outage when loading OpenOffice.org Portable, system crash while loading ucpdav1.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.