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