VistaCooperation_rel_u_x64_vc12.dll is considered a type of Dynamic Link Library (DLL) file. Dynamic Link Library files, like VistaCooperation_rel_u_x64_vc12.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. Vegas Pro 16) could share the same VistaCooperation_rel_u_x64_vc12.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 VistaCooperation_rel_u_x64_vc12.dll is attempted to be loaded either when Vegas Pro 16 is starting up, or in some cases already running. Some of the most common VistaCooperation_rel_u_x64_vc12.dll errors include:
- Access Violation at address - VistaCooperation_rel_u_x64_vc12.dll.
- VistaCooperation_rel_u_x64_vc12.dll could not be found.
- Cannot find C:\Program Files\VEGAS\VEGAS Pro 16.0\Protein\VistaCooperation_rel_u_x64_vc12.dll.
- Cannot register VistaCooperation_rel_u_x64_vc12.dll.
- Cannot start Vegas Pro 16. A required component is missing: VistaCooperation_rel_u_x64_vc12.dll. Please install Vegas Pro 16 again.
- Failed to load VistaCooperation_rel_u_x64_vc12.dll.
- The application has failed to start because VistaCooperation_rel_u_x64_vc12.dll was not found.
- The file VistaCooperation_rel_u_x64_vc12.dll is missing or corrupt.
- This application failed to start because VistaCooperation_rel_u_x64_vc12.dll was not found. Re-installing the application may fix this problem.
Your VistaCooperation_rel_u_x64_vc12.dll file could be missing due to accidental deletion, uninstalled as a shared file of another program (shared with Vegas Pro 16), or deleted by a malware infection. Furthermore, VistaCooperation_rel_u_x64_vc12.dll file corruption could be caused from a power outage when loading Vegas Pro 16, system crash while loading VistaCooperation_rel_u_x64_vc12.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.