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