Why am I getting this exception when shutting down my MFC application that reads a ACCDB database?

Question

I have encountered an issue and can't work out why it is happening.

Context:

• Windows 11
• Visual Studio 2022
• MFC Dialog 64 bit
• DEBUG mode

When I run the software in DEBUG mode, and perform a specific action (reading a ACCDB database) and then terminate the software, I get an exception.

I use the basic methods to open and close the database:

if (m_dbDatabase.OpenEx(strDBConnectString, CDatabase::noOdbcDialog))
{
    m_pRecords = std::make_unique<CRecordset>(&m_dbDatabase);
}

And:

void CPTSDatabase::CloseDatabase()
{
    if (m_dbDatabase.IsOpen())
        m_dbDatabase.Close();
}

The database activity is operating correctly and not causing exceptions. Yet, when I terminate the software:

static void __cdecl try_cor_exit_process(UINT const return_code) throw()
{
    __crt_unique_hmodule mscoree;
    if (!GetModuleHandleExW(0, L"mscoree.dll", mscoree.get_address_of()))
        return;

    auto const cor_exit_process = __crt_get_proc_address<exit_process_pft>(mscoree.get(), "CorExitProcess");
    if (!cor_exit_process)
        return;

    cor_exit_process(return_code);
}

I don't understand why did message is being displayed. My application InitInstance and ExitInstance both make reference to (respectively):

• ::CoInitialize(nullptr);
• ::CoUninitialize();

What I can confirm is that if I do not run the code that opens the database to read in and then close my application, I will not get this exception.

---

This is the Time Delay Debug entry:

Not sure how that helps me at this stage.

BTW. If I comment out CoUninitialize it makes no difference. I sill get the error.

---

I don't know if it is related, when the OpenEx call is performed on the database I debugged into it and noticed:

d:\a01_work\43\s\src\vctools\VC7Libs\Ship\ATLMFC\Src\MFC\dbcore.cpp(616) : AppMsg - Warning: ODBC Success With Info, d:\a01_work\43\s\src\vctools\VC7Libs\Ship\ATLMFC\Src\MFC\dbcore.cpp(174) : AppMsg - Driver's SQLSetConnectAttr failed

The actual function returned true though and gave me a valid database. I do not know if this message is part of the problem.

---

Update

I thought I would try a simple test project (dialog) and simply get it in the dialogs OnInitDialog to open my DB and then close it. Then I shut the test app down.

If I run this code in DEBUG x86:

if (db.OpenEx(_T("Driver={Microsoft Access Driver (*.mdb)};DBQ=D:\\My Documents\\Public Talks\\Public Talks.MDB;Pwd=~~~~"), CDatabase::noOdbcDialog))
{
    AfxMessageBox(_T("DB Opened"));
    db.Close();
}

And close that app down - no issues triggered.

But when I try this with DEBUG x64 and close it:

if (db.OpenEx(_T("Driver={Microsoft Access Driver (*.mdb, *.accdb)};DBQ=D:\\My Documents\\Public Talks\\Public Talks.ACCDB;Pwd=~~~~~"), CDatabase::noOdbcDialog))
{
    AfxMessageBox(_T("DB Opened"));
    db.Close();
}

Now that triggers: