Connecting to 2012 localDB from VBA

Question

I have been having a very frustrating time trying to connect to a localDB database from Excel VBA.
I have created a database using Visual Studio 2012 Express and in the IDE the database seems fine. I can create data and query it without problem.
In Visual Studio the Connection Properties windows shows:
Name:                     D:\FISKDEV_EXCEL\FISKDBSOLN\FISKDBSOLN\FISKDB.MDF
Connection String:    Data Source=(LocalDB)\v11.0;AttachDbFilename=D:\FiskDev_Excel\FiskDBSoln\FiskDBSoln\FiskDB.mdf;Integrated Security=True
Provider:                 .NET Framework Data Provider for SQL Server
Primary File Path:     D:\FiskDev_Excel\FiskDBSoln\FiskDBSoln\FiskDB.mdf
I then try to connect to the automatic instance with the following code:
Dim connStr As String
Dim conn As ADODB.Connection
connStr = "Server=(localDB)\v11.0;AttachDBFilename=D:\FiskDev_Excel\FiskDBSoln\FiskDBSoln\FiskDB.mdf;Integrated Security=True"
Set conn = New ADODB.Connection
conn.ConnectionString = connStr
conn.Open
However the Open fails with the following message:
"Run-time Error  '-2147217887(80040e21)'
Multiple-step OLE DB operation generated errors. Check each OLE DB status value, if available. No work was done."
Any pointer to what I am doing wrong would be greatfully received.

Answer 1

Hi Olaf,
I've changed the connection code to the following
Dim connStr As String
Dim conn As ADODB.Connection
'connStr = "Server=(localDB)\v11.0;AttachDBFilename=D:\FiskDev_Excel\FiskDBSoln\FiskDBSoln\FiskDB.mdf;Integrated Security=True"
connStr = "Provider=SQLOLEDB;Data Source=(localDB)\v11.0;Initial Catalog=FiskDB;Integrated Security=SSPI"
Set conn = New ADODB.Connection
conn.ConnectionString = connStr
conn.Open
and now get the following Message:
Run-Time Error '-2147467259 (80004005)
[DBNETLIB][ConnectionOpen (Connect().]SQL Server does not exist or Access denied.
All my installations have been done under a User Account with Admin privileges and I have not explicitly set any rights at all. So I presume all the defaults were applied and since I am executing the above code under the same user account I also presume
that the 'access denied' does not apply. So what is that that this code can't find - the localDB instance? ( to which I thought it attached automatically). Are there any suggestions on what I might try?
I've also run the above with
Initial Catalog=D:\FiskDev_Excel\FiskDBSoln\FiskDBSoln\FiskDB.mdf
but got the same result