: This is the Microsoft C Runtime Library , a critical component needed to run programs developed with Visual C++ 2005.
Instead of searching for a specific RAR file, use these official methods to restore the missing component: Download mvvssmkr80 rar
: If the error only happens with one specific app (like older versions of Microsoft Publisher or specialized legacy software), reinstalling that app often restores the necessary library files automatically. : This is the Microsoft C Runtime Library