X3FSDK.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like X3FSDK.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. PolyView) could share the same X3FSDK.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 X3FSDK.dll is attempted to be loaded either when PolyView is starting up, or in some cases already running. Some of the most common X3FSDK.dll errors include:
- Access Violation at address - X3FSDK.dll.
- X3FSDK.dll could not be found.
- Cannot find C:\Program Files (x86)\Polybytes\PolyView\Program\X3FSDK.dll.
- Cannot register X3FSDK.dll.
- Cannot start PolyView. A required component is missing: X3FSDK.dll. Please install PolyView again.
- Failed to load X3FSDK.dll.
- The application has failed to start because X3FSDK.dll was not found.
- The file X3FSDK.dll is missing or corrupt.
- This application failed to start because X3FSDK.dll was not found. Re-installing the application may fix this problem.
Your X3FSDK.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with PolyView), or deleted by a malware infection. Furthermore, X3FSDK.dll file corruption could be caused from a power outage when loading PolyView, system crash while loading X3FSDK.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.