BPQtLib.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like BPQtLib.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like iscsicli.exe - to follow. These files were created so that multiple programs (eg. EaseUS Todo Backup) could share the same BPQtLib.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 BPQtLib.dll is attempted to be loaded either when EaseUS Todo Backup is starting up, or in some cases already running. Some of the most common BPQtLib.dll errors include:
- Access Violation at address - BPQtLib.dll.
- BPQtLib.dll could not be found.
- Cannot find C:\Program Files (x86)\EaseUS\Todo Backup\bin\BPQtLib.dll.
- Cannot register BPQtLib.dll.
- Cannot start EaseUS Todo Backup. A required component is missing: BPQtLib.dll. Please install EaseUS Todo Backup again.
- Failed to load BPQtLib.dll.
- The application has failed to start because BPQtLib.dll was not found.
- The file BPQtLib.dll is missing or corrupt.
- This application failed to start because BPQtLib.dll was not found. Re-installing the application may fix this problem.
Your BPQtLib.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with EaseUS Todo Backup), or deleted by a malware infection. Furthermore, BPQtLib.dll file corruption could be caused from a power outage when loading EaseUS Todo Backup, system crash while loading BPQtLib.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.