submit data from excel userform to password protected access database - vba

Question

i am trying to submit userform data from excel (2013) to an access database.
without password, this code works fine.
Private Sub Addoer_Click()
Dim cnn As ADODB.Connection
Dim rst As ADODB.Recordset
Dim dbPath
dbPath = Sheet16.Range("K18").Value
Set cnn = New ADODB.Connection
cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data source=" & dbPath
Now i am trying to use same method to send data from excel to a password protected database (each user has different password). In the excel file, the user id is at Sheet16.Range("K17") and password is at Sheet16.Range("K19")
userid = Sheet16.Range("K17").Value
pw = Sheet16.Range("K19").Value
i changed the cnn.open line to following
cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;" & _
"Data source=" & dbPath, userid, pw, -1
and I am getting this error:
Error -2147217843 (Cannot start your application.The workgroup information file is missing or open exclusively by another User.)
i changed the cnn.open line to this
cnn.Open "Provider=Microsoft.ACE.OLEDB.12.0;Data source=" & dbPath, """ & userid & """, """ & pw & """, -1
and I get this error
Error -2147217843 (Not a valid account name or password).
Is there anybody that can help to point where did I do wrong?

Answer 1

Your second attempt doesn't work, because you are passing in the username as "user" when the username is actually user.
Regarding your first attempt, I found this note at connectionstrings.com:
Note! Reports say that a database encrypted using Access 2010 - 2013 default encryption scheme does not work with this connection string. In Access; try options and choose 2007 encryption method instead. That should make it work.
Also, could it be that the database is opened exclusively by another connection / program? If you have the database open in Access and you can design tables / queries, IIRC that means you have exclusive access to the database, and no other connections can connect to it. Do you see an .laccdb (or .ldb) file in the same folder as the Access database?
References:
Microsoft OLE DB Proivder for Microsoft Jet
ConnectionString Property
Formatting Rules for Connection Strings at connectionstrings.com