Microsoft C++ Runtime Library ⏰

The phrase typically appears in a runtime error dialog on Windows. When you see this in a "deep content" context (e.g., a log file, crash dump, or error message), it indicates a problem with a program that depends on the Microsoft Visual C++ Redistributable .

.symfix .reload !analyze -v Look for the module that called into the runtime (e.g., MyApp.exe calling msvcp140!std::string::assign ). Use ListDLLs (Sysinternals) or Process Explorer :

// BAD class Base Base() callMe(); virtual void callMe()=0; ; // GOOD class Base void init() callMe(); virtual void callMe()=0; ; Run System File Checker :