The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine

Hello,

I am using oledb to access Excel

If m_iFileTypeID = 1 Then   'for *.xls
                If m_bFileContainsColumnNames Then
                    m_sExcelConn1 = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
                          "Data Source=" & FilePath & ";" & _
                          "Extended Properties=""Excel 8.0;HDR=Yes;IMEX=1"""
                Else
                    m_sExcelConn1 = "Provider=Microsoft.Jet.OLEDB.4.0;" & _
                              "Data Source=" & FilePath & ";" & _
                              "Extended Properties=""Excel 8.0;HDR=No;IMEX=1"""
                End If
        ElseIf m_iFileTypeID = 7 Then   'for *.xlsx
                If m_bFileContainsColumnNames Then
                    m_sExcelConn1 = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & FilePath & ";Persist Security Info=False;Extended Properties=""excel 12.0;HDR=YES;IMEX=1"";"
                Else
                    m_sExcelConn1 = "Provider=Microsoft.ACE.OLEDB.12.0;Data Source=" & FilePath & ";Persist Security Info=False;Extended Properties=""excel 12.0;HDR=NO;IMEX=1"";"
                End If
        End If

This piece of code is working in 32-bit Operating system with Windows vista ultimate with SSIS 2005 and SSIS 2008. But when we take this to production where we Have SQL Server 2008 R2,Windows 8 I get Error

The 'Microsoft.ACE.OLEDB.12.0' provider is not registered on the local machine

we have already downloaded the AccessDatabaseEngine installed it. But we still have the same error. 

P.S. we have tried the exact same code with SQL server 2012 and it works like a charm. Any help on this is really helpful

Thanks,

Anand.