Getting exception "unspecified error" during execution.

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I am using Access 2007.
I am Getting exception "Unspecified Error" during execution.

C++

_ConnectionPtr m_pcon;
try {
  _bstr_t conStr = _T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=\"d:\\bank.mdb\"");
  hr = m_pcon->Open(conStr, L"",L"",adConnectUnspecified);
} catch(_com_error& ce) {
	MessageBox(ce.ErrorMessage()); 
 }

What I have tried:

1. Tried changing the connection string but won't help.

C++

_bstr_t conStr = _T("Provider=Microsoft.Jet.OLEDB.4.0;Data Source=d:\\bank.mdb");

2. File bank.mdb is present in D drive.
3. stdafx.h having the following additional statements for oledb connection
#include "atlbase.h"
#import "C:\Windows\winsxs\x86_microsoft-windows-m..ents-mdac-ado15-dll_31bf3856ad364e35_6.1.7601.22012_none_0ebfc67ce80861b4\msado15.dll" no_namespace rename("EOF", "ADOEOF")

Please suggest how to fix this issue.

Posted 11-Nov-16 16:10pm

Subrat 4708266

Updated 11-Nov-16 23:10pm

KarstenK

v2

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KarstenK 12-Nov-16 4:17am

Are you sure, that the process has the rights to open the db. Try it in some temp dir.

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Jochen Arndt · Answer 1 · 2016-11-11T23:10:00

Solution 1

There is a semicolon missing at the end of your connect string.

Try this (using a wide string here to avoid conversions because the BSTR type uses wide strings internally):

_bstr_t conStr = L"Provider=Microsoft.Jet.OLEDB.4.0;Data Source=d:\\bank.mdb;";

Posted 11-Nov-16 23:10pm

Jochen Arndt