Ecpucm.dll

A recent Windows update may have overwritten your payment terminal drivers.

If you’re seeing DLL_PROCESS_ATTACH failures, check if the entry-point function is failing due to a mismatch in the calling convention (e.g., __stdcall vs __cdecl ). ecpucm.dll

Use tools like Dependency Walker to ensure ecpucm.dll isn't missing its own sub-dependencies. A recent Windows update may have overwritten your

Handling ecpucm.dll: Best Practices for Payment Terminal Integration ecpucm.dll