ACC2000: How to Change User Passwords Programmatically Using DAO

Resetting or Changing a User's Password When Password Has Been Forgotten

1. Open your database in Microsoft Access 2000.
2. In the Database window, click Modules under Objects, and then click New.
3. Type or paste the following code in the new module:

   Public Sub ChangeResetPassword(StrAction As String, StrUsername As _
   String, StrAdminLogon As String, StrAdminPass As String, Optional _
   StrNewPassword As Variant)
   
   Dim ws As Workspace
   On Error GoTo ChangeResetPassword:
   
   ' Create a new Administrative Workspace. If The StrAction passed to the
   ' function is "Change" then change the Password of the User named in
   ' StrUsername to the password saved in StrNewPassword.
   ' If the StrAction passed is "Reset", Then reset the password of
   ' the User mentioned in StrUsername. If neither "Change" or "Reset"
   ' is passed to the function in the StrAction argument, inform the
   ' user of an error and exit the procedure.
   
   Set ws = DBEngine.CreateWorkspace("AdminWorkspace", StrAdminLogon, _
   StrAdminPass)
   If StrAction = "change" Then
   
        If Not IsNull(StrNewPassword) Then
           ws.Users(StrUsername).NewPassword "", StrNewPassword
           MsgBox "Password Change Successful", vbOKOnly
        Else
            MsgBox "When Attempting to Change A User's Password, You " & _
              "Must Include a New Password", vbOKOnly
        End If
   
   ElseIf StrAction = "reset" Then
       'When the current user is in the admins group and reseting
       'his/her own password, the current password must be supplied.
       'In all other cases, the current user password is not needed
       'for a reset.
       If StrUsername = ws.UserName And StrAdminLogon = ws.UserName Then
              ws.Users(StrUsername).NewPassword StrAdminPass, ""
              MsgBox "Password Successfully Reset", vbOKOnly
       Else
              ws.Users(StrUsername).NewPassword "", ""
              MsgBox "Password Successfully Reset", vbOKOnly
       End If
   Else
       MsgBox "You must Select a StrAction of either '" & "Change'" & _
         "' or '" & "Reset'.", vbOKOnly
   End If
   
   ws.Close
   Set ws = Nothing
   Exit Sub
   
   ChangeResetPassword:
        MsgBox Err.Description
   End Sub
   					

4. Save the module as SecurityCode and close it.

Allowing a User to Change His or Her Own Password

1. Open your database in Microsoft Access.
2. In the Database window, click Modules under Objects, and select the SecurityCode module that you created in the "Resetting or Changing a User's Password When Password Has Been Forgotten" section.
3. Click Design, and type or paste the following code:

   Public Sub ChangeUserPassword(StrUsername As String, StrOldPassword _
   As String, StrNewPassword As String)
   
   On Error GoTo ChangeUserPassword_Err:
   DBEngine(0).Users(StrUsername).NewPassword StrOldPassword, _
     StrNewPassword
   
   MsgBox "Password Change Successful", vbInformation
   Exit Sub
   
   ChangeUserPassword_Err:
       MsgBox Err.Description
   End Sub
   					

4. Save the Module and close it.

Usage Example

   - Change their own password.
				

   - Reset a user's password.
   - Change a user's password.
				

1. Create a new blank form and save it as frmChangePasswords.
2. With the frmChangePasswords form open in Design View, add the following text box, label, and command button controls. Each label is associated with a specific text box and should be placed near the text box on the form.

      Text Box:
      -----------------
      Name: txtUserName
   
      Label:
      --------------------
      Name: lblUserName
         Caption: UserName
   
      Text Box:
      -----------------------
      Name: txtOldPassword
         Input Mask: Password
   
      Label:
      ------------------------
      Name: lblOldPassword
         Caption: Old Password
   
      Text Box:
      ------------------------
      Name: txtNewPassword
         Input Mask: Password
   
      Label:
      ------------------------
      Name: lblNewPassword
         Caption: New Password
   
      Text Box:
      -----------------------
      Name: txtVerifyPassword
         Input Mask: Password
   
      Label:
      ---------------------------
      Name: lblVerify Password
         Caption: Verify Password
   
      Text Box:
      -----------------------
      Name: txtAdminUsername
         Input Mask: Password
   
      Label:
      -----------------------------------
      Name: lblAdminUsername
         Caption: Administrative UserName
   
      Text Box:
      -----------------------
      Name: txtAdminPassword
         Input Mask: Password
   
      Label:
      -----------------------------------
      Name: lblAdminPassword
         Caption: Administrative Password
   
      Command Button:
      -----------------------------------------------
      Name: CmdChange
         Caption: Change Password(Non-Administrative)
         Height: 720
         Width: 1440
   
      Command Button:
      -------------------------------------------
      Name: CmdChangeAdmin
         Caption: Change Password(Administrative)
         Height: 720
         Width: 1440
   
      Command Button:
      ------------------------------------------
      Name: CmdReset
         Caption: Reset Password(Administrative)
         Height: 720
         Width: 1440
   					

3. With the frmTestPassword form open in Design view, on the View menu, click Code, and then type the following line in the form module's Declarations section if it is not already there:

   Option Explicit
   					

4. Type or paste the following code in the form module:

   Private Sub CmdChange_Click()
   
   On Error GoTo CmdChange_err
   ' Make sure the password typed in the New Password text box
   ' matches what has been typed in the Verify Password text box.
   If Me!txtNewPassword <> Me!txtVerifyPassword Then
      MsgBox "The New and Verified Passwords Do Not Match. " & _
        "Please Re-enter", vbCritical
      Me!txtNewPassword = ""
      Me!txtNewVerifyPassword = ""
      Me!txtNewPassword.SetFocus
   Else
      ' Check to make sure the Old Password has been filled in and
      ' if it has, change the password.
      If IsNull(Me!txtOldPassword) Then
          MsgBox "Leaving the Old Password textbox empty will cause " & _
            "an error unless you currently have no password", vbOKOnly
        Call ChangeUserPassword(CurrentUser(), "", Me!txtNewPassword)
      Else
        Call ChangeUserPassword(CurrentUser(), Me!txtOldPassword, _
           Me!txtNewPassword)
      End If
   End If
   
   Exit Sub
   
   CmdChange_err:
             MsgBox Err.Description
   End Sub
   
   Private Sub cmdChangeAdmin_Click()
   
   On Error GoTo CmdChangeAdmin_err
   
   ' Test to make sure appropriate text boxes are filled in because this
   ' is an administrative function.
   
   If Not IsNull(Me!txtAdminPassword) And Not _
     isNull(Me!txtAdminUsername) And Not IsNull(Me!txtUserName) Then
       If Me!txtNewPassword <> Me!txtVerifyPassword Then
          MsgBox "The New and Verified Passwords Do Not Match. Please" & _
            " Re-enter", vbCritical
          Me!txtNewPassword = ""
          Me!txtNewVerifyPassword = ""
          Me!txtNewPassword.SetFocus
   
      Else
          Call ChangeResetPassword("Change",Me!txtUserName, _
            me!txtAdminUsername, me!txtAdminPassword, Me!txtNewPassword)
      End If
   
   Else
   
    MsgBox "The textboxes for UserName, New Password, Verified " & _
       "Password, Admin UserName and Admin Password must be complete " & _
       "for this function to operate correctly.", vbOKOnly
   
   End If
   Exit Sub
   
   CmdChangeAdmin_err:
      MsgBox Err.Description
   
   End Sub
   
   Private Sub cmdReset_Click()
   
   On Error GoTo CmdReset_err
   
   ' Test to make sure appropriate textboxes are filled in because this is
   ' an administrative function.
   
   If Not IsNull(Me!txtAdminPassword) And Not _
     IsNull(Me!txtAdminUsername) And Not IsNull(Me!txtUserName) Then
     Call ChangeResetPassword("Reset", Me!txtUserName, _
     Me!txtAdminUsername, Me!txtAdminPassword)
   Else
     MsgBox "The textboxes for UserName, New Password, Verified " & _
       "Password, Admin UserName and Admin Password must be complete " & _
       "for this function to operate correctly.", VBOKOnly
   End If
   Exit Sub
   
   CmdReset_err:
     MsgBox Err.Description
   
   End Sub
   					

5. Save your changes and close the Module window. Save and close the form.