How to get specific error code with MSXML SAX validator

Question

How to get specific error code with MSXML SAX validator

nallandighal, srinivas (TR Technology) 20

When I use MSXML DOM model for validating a XML file against a schema, I get validation error "0xc00ce014" for XML structural issues. Now, we need to use MSXML SAX model for validating XML file as its very big. Using this model we always get error code "0x80004005" for any type of error. So, how do I get same functionality as earlier (i.e need to differentiate this error). AI models suggesting me to parse the error message as this is a known issue. But, if I know all kinds of error messages then I can put a map. How do I get those messages?

Viorel 121.6K Reputation points

2025-05-06T15:25:58.25+00:00

Does your code succeed on valid files? (The error 0x80004005 seems to mean “Access denied”).
nallandighal, srinivas (TR Technology) 20 Reputation points

2025-05-06T15:38:59.5+00:00

Yes, it succeed on valid files. Yes, I get the code 0x80004005
RLWA32 48,746 Reputation points

2025-05-13T07:34:47.38+00:00

@nallandighal, srinivas (TR Technology), Have you tried the code that I posted to extract the message Ids and text from the MSXML 6 resource dll?

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Viorel 121.6K Reputation points

2025-05-06T15:25:58.25+00:00

Does your code succeed on valid files? (The error 0x80004005 seems to mean “Access denied”).
nallandighal, srinivas (TR Technology) 20 Reputation points

2025-05-06T15:38:59.5+00:00

Yes, it succeed on valid files. Yes, I get the code 0x80004005
RLWA32 48,746 Reputation points

2025-05-13T07:34:47.38+00:00

@nallandighal, srinivas (TR Technology), Have you tried the code that I posted to extract the message Ids and text from the MSXML 6 resource dll?

Answer 1

But, if I know all kinds of error messages then I can put a map. How do I get those messages?

MSXML6 uses a resource only dll (MSXML6r.dll) for messages. I used the following console application on Win 10 22H2 to print the message table.

#define WIN32_LEAN_AND_MEAN
#include <Windows.h>

#include <stdio.h>
#include <tchar.h>

int _tmain()
{
    auto hModule = LoadLibraryEx(_T("C:\\Windows\\System32\\msxml6r.dll"), NULL, LOAD_LIBRARY_AS_DATAFILE | LOAD_LIBRARY_AS_IMAGE_RESOURCE);
    if (hModule)
    {
        HRSRC hrsrc = FindResource(hModule, MAKEINTRESOURCE(1), RT_MESSAGETABLE );
        if (hrsrc)
        {
            HGLOBAL hglobal = LoadResource(hModule, hrsrc);
            if (hglobal)
            {
                PVOID pv = LockResource(hglobal);
                if (pv)
                {
                    PMESSAGE_RESOURCE_DATA pmrd = (PMESSAGE_RESOURCE_DATA)pv;
                    _tprintf_s(_T("Message resource data contains %u blocks\n"), pmrd->NumberOfBlocks);
                    for (DWORD i = 0; i < pmrd->NumberOfBlocks; i++)
                    {
                        PMESSAGE_RESOURCE_BLOCK pmrb = &pmrd->Blocks[i];
                        _tprintf_s(_T("\n--------- Block %u -----------\n"), i);
                        _tprintf_s(_T("LowId: %u, HighId: %u, OffsetToEntries: %u\n"), pmrb->LowId, pmrb->HighId, pmrb->OffsetToEntries);
                        for (DWORD x = pmrb->LowId, y = 0; x <= pmrb->HighId; x++)
                        {
                            LPTSTR pszText{};
                            FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER | FORMAT_MESSAGE_FROM_HMODULE | FORMAT_MESSAGE_IGNORE_INSERTS,
                                hModule, x, 0, (LPTSTR)&pszText, 0, nullptr);
                            _tprintf_s(_T("Message id: %u (0x%08X), Text: %s\n"), x, x, pszText);
                            LocalFree(pszText);
                        }
                    }
                    UnlockResource(hglobal);
                }
            }
        }

        FreeLibrary(hModule);
    }
    return 0;
}

Answer 2

nallandighal, srinivas (TR Technology) 20

It worked. Thanks

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How to get specific error code with MSXML SAX validator

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