New JRO.JetEngine Throwing Class Not Registered (1 Viewer)

dynamictiger

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I thought as I haven't updated my Access skills for some time and am probably rusty around the edges I should buy a more up to date book and work through it. At worst I will cover what I already use daily but maybe as I am not a complete begineer I may pick up more this time around...

The book I choose was Access 2016 Programming By Example. in chapter 10 there is the following module.

Code:
Sub mySetPass_AndOpenDB_withADO()
On Error GoTo ErrorHandler
Dim jetEng As JRO.JetEngine
Dim conn As ADODB.Connection
Dim strCompactFrom As String
Dim strCompactTo As String
Dim strPath As String

    strPath = CurrentProject.Path & "\"
    
    strCompactFrom = "Northwind.mdb"
    strCompactTo = "Northwind_P.mdb"
    
    Set jetEng = New JRO.JetEngine
    
    ' Compact the database specifying
    ' the new database password
        jetEng.CompactDatabase "Data Source=" & _
        strPath & strCompactFrom & ";", _
        "Data Source=" & strPath & strCompactTo & ";" & _
        "Jet OLEDBatabase Password=welcome"
    
    MsgBox "Ther database " & strPath & strCompactTo & " is password protected"
    
    Set jetEng = Nothing
    
    'Open password file
    Set conn = New ADODB.Connection
    
    With conn
    
        .Provider = "Microsoft.Jet.OLEDB.4.0;"
        .ConnectionString = "Data Source =" & strPath & strCompactTo & "; JetOLEDB:Database Password = welcome"
        .Open
        
            
    End With
    
    If conn.State = adStateOpen Then
    
        MsgBox "PW db opened"
    
    End If
    
    conn.Close
    
        MsgBox "DB Closed"
        
    Set conn = Nothing
    
    
    
Exit Sub
ErrorHandler:

    If Err.Number = -2147217897 Then
    
        Kill strPath & strCompactTo
        
    ElseIf Err.Number = -2147467259 Then
    
        MsgBox "Close db before compacting"
        Exit Sub
        
    Else
      
        MsgBox Err.Number & ": " & Err.Description
        Exit Sub
        
    End If
    
    Resume


End Sub

This code fails consistently on Set jetEng = New JRO.JetEngine with error -2147221164 Class not registered.

I thought this was likely a reference issue. I thought perhaps the dll is not in my system. It was in my system. I thought it may not be registered, I registered it.

I thought perhaps I need to unregister it, I cleared the reference from Access, closed Access, opened command prompt as administrator unregistered the dll and then registered it, reopened access, referenced the dll again and still getting this error.

I really cant see what else it can be. Anyone got an idea?
 

Isaac

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Do a search for msjro.dll on your hard drive.
Check the references in your applications for 'Microsoft Jet and Replication Objects 2.6 Library', under the References portion of VBA project options.

(I plagiarized this from https://www.tek-tips.com/viewthread.cfm?qid=1565030)

If you're rusty, that's an interesting place to begin brushing!
 

dynamictiger

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None of those are helping and I have already checked all them.

The book came with code. The error is in their version of the code too. I am wondering if its a 64 bit issue?
 

isladogs

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Are there any APIs with that code? Are you able to test it in 32-bit Access?

Here's some alternative code using DAO to alter a database password externally. USE WITH CAUTION!

Code:
Public Function AlterDBPassword() As Boolean

On Error GoTo Err_Handler

    Dim db As DAO.Database, strPath As String, strOldPwd As String, strNewPwd As String
       
    strPath = "Enter full path here"
    strOldPwd = "OldPasswordHere" ' leave blank if no password
    strNewPwd = "NewPasswordHere"
   
    Set db = DBEngine.OpenDatabase(strPath, True, False, "MS Access;PWD=" & strOldPwd)
    db.NewPassword strOldPwd, strNewPwd
       
  'Examples
   ' Set db = DBEngine.OpenDatabase(strPath, True, False, "MS Access;PWD=LetMeIn") 'specified db has a password LetMeIn
   ' db.NewPassword "LetMeIn", "Isladogs" 'change Pwd to isladogs

    Set db = Nothing
   
Exit_Handler:
    Exit Function
   
Err_Handler:
    MsgBox "Error " & Err & " in AlterDBPassword procedure: " & vbCrLf & Err.Description
    GoTo Exit_Handler

End Function

If it helps I also have DAO code to compact an external database
 
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