libdirect3d9_filters_plugin.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like libdirect3d9_filters_plugin.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like FileCoAuth.exe - to follow. These files were created so that multiple programs (eg. VLC Media Player) could share the same libdirect3d9_filters_plugin.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 libdirect3d9_filters_plugin.dll is attempted to be loaded either when VLC Media Player is starting up, or in some cases already running. Some of the most common libdirect3d9_filters_plugin.dll errors include:
- Access Violation at address - libdirect3d9_filters_plugin.dll.
- libdirect3d9_filters_plugin.dll could not be found.
- Cannot find C:\Users\Tester\Downloads\VLCPortable\App\vlc\plugins\d3d9\libdirect3d9_filters_plugin.dll.
- Cannot register libdirect3d9_filters_plugin.dll.
- Cannot start VLC Media Player. A required component is missing: libdirect3d9_filters_plugin.dll. Please install VLC Media Player again.
- Failed to load libdirect3d9_filters_plugin.dll.
- The application has failed to start because libdirect3d9_filters_plugin.dll was not found.
- The file libdirect3d9_filters_plugin.dll is missing or corrupt.
- This application failed to start because libdirect3d9_filters_plugin.dll was not found. Re-installing the application may fix this problem.
Your libdirect3d9_filters_plugin.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with VLC Media Player), or deleted by a malware infection. Furthermore, libdirect3d9_filters_plugin.dll file corruption could be caused from a power outage when loading VLC Media Player, system crash while loading libdirect3d9_filters_plugin.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.