win10_share_handler.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like win10_share_handler.dll, are essentially a "guide book" that stores information and instructions for executable (EXE) files - like OneDriveSetup.exe - to follow. These files were created so that multiple programs (eg. Opera) could share the same win10_share_handler.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 win10_share_handler.dll is attempted to be loaded either when Opera is starting up, or in some cases already running. Some of the most common win10_share_handler.dll errors include:
- Access Violation at address - win10_share_handler.dll.
- win10_share_handler.dll could not be found.
- Cannot find C:\Users\Tester\AppData\Local\Programs\Opera\64.0.3417.54\win10_share_handler.dll.
- Cannot register win10_share_handler.dll.
- Cannot start Opera. A required component is missing: win10_share_handler.dll. Please install Opera again.
- Failed to load win10_share_handler.dll.
- The application has failed to start because win10_share_handler.dll was not found.
- The file win10_share_handler.dll is missing or corrupt.
- This application failed to start because win10_share_handler.dll was not found. Re-installing the application may fix this problem.
Your win10_share_handler.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Opera), or deleted by a malware infection. Furthermore, win10_share_handler.dll file corruption could be caused from a power outage when loading Opera, system crash while loading win10_share_handler.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.