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