RenderSystem_Direct3D9.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like RenderSystem_Direct3D9.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. Wondershare UniConverter) could share the same RenderSystem_Direct3D9.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 RenderSystem_Direct3D9.dll is attempted to be loaded either when Wondershare UniConverter is starting up, or in some cases already running. Some of the most common RenderSystem_Direct3D9.dll errors include:
- Access Violation at address - RenderSystem_Direct3D9.dll.
- RenderSystem_Direct3D9.dll could not be found.
- Cannot find C:\Program Files (x86)\Wondershare\Video Converter Ultimate\RenderSystem_Direct3D9.dll.
- Cannot register RenderSystem_Direct3D9.dll.
- Cannot start Wondershare UniConverter. A required component is missing: RenderSystem_Direct3D9.dll. Please install Wondershare UniConverter again.
- Failed to load RenderSystem_Direct3D9.dll.
- The application has failed to start because RenderSystem_Direct3D9.dll was not found.
- The file RenderSystem_Direct3D9.dll is missing or corrupt.
- This application failed to start because RenderSystem_Direct3D9.dll was not found. Re-installing the application may fix this problem.
Your RenderSystem_Direct3D9.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Wondershare UniConverter), or deleted by a malware infection. Furthermore, RenderSystem_Direct3D9.dll file corruption could be caused from a power outage when loading Wondershare UniConverter, system crash while loading RenderSystem_Direct3D9.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.