Error Connecting Windows App to MYOB

Hi everyone, I wanted to highlight some brilliant support from Steve_PP that has already helped other developers to overcome this.
Please check out their post here which includes example code and instructions.
Thank you Steve!

Hi All,
I've been working though this for several days and I've built a test app (i've built this using example code from the community) using the WebView2 package and still no luck.

Even when I try using Edge I still get an error message as below:

Other times I get and IP Address error message.

I'm trying this on my Dev and other device with the same results, the best I've had so far is edge in that it gave me back a code.

I have tried my test app and I've only ever got back a response with the code in it and off course it had an error.

Below is the code for the form as I can't add the project files....

Imports Microsoft.Web.WebView2.Core
Imports System.IO

Public Class frmWebView
    Private Async Sub frmWebView_Load(sender As Object, e As EventArgs) Handles MyBase.Load
        txtURL.Text = "https://www.google.com.au"
        LogMsg($"MS Edge Version: {CoreWebView2Environment.GetAvailableBrowserVersionString()}")
        '   Initialise.
        Await wvwMain.EnsureCoreWebView2Async()
        'Await InitializeCoreWebView2Async(Path.Combine("C:\Temp", Reflection.Assembly.GetExecutingAssembly().GetName().Name))

        If Not String.IsNullOrEmpty(txtURL.Text) Then
            '   Navigate to URL.
            WebsiteNavigate(txtURL.Text)
        End If
    End Sub

    Private Sub frmWebView_FormClosed(sender As Object, e As FormClosedEventArgs) Handles MyBase.FormClosed
        '   Unsubscribe from CoreWebView2 event(s) (remove event handlers).
        RemoveHandler wvwMain.CoreWebView2.HistoryChanged, AddressOf wvwMain_HistoryChanged
    End Sub

    Private Sub txtURL_KeyPress(sender As Object, e As KeyPressEventArgs) Handles txtURL.KeyPress
        '// Press ENTER
        If Asc(e.KeyChar) = 13 Then
            '// No beep
            e.Handled = True
            Try
                'wvwMain.CoreWebView2.Navigate(txtURL.Text)
                '// Or --> wvwMain.CoreWebView2.Navigate(txtURL.Text)
                wvwMain.Source = New Uri(txtURL.Text)
            Catch ex As UriFormatException
                MessageBox.Show("The URL must be fully styled, such as the prefix. http[s]://")
            Catch ex As Exception
                MessageBox.Show($"Error: {ex}")
            End Try
        End If
    End Sub

    Private Sub wvwMain_CoreWebView2InitializationCompleted(sender As Object, e As CoreWebView2InitializationCompletedEventArgs) Handles wvwMain.CoreWebView2InitializationCompleted
        LogMsg("wvwMain_CoreWebView2InitializationCompleted")
        LogMsg($"UserDataFolder: {wvwMain.CoreWebView2.Environment.UserDataFolder.ToString()}")
        '   Subscribe to CoreWebView2 event(s) (add event handlers).
        AddHandler wvwMain.CoreWebView2.HistoryChanged, AddressOf wvwMain_HistoryChanged
    End Sub

    Private Sub wvwMain_NavigationCompleted(sender As Object, e As CoreWebView2NavigationCompletedEventArgs) Handles wvwMain.NavigationCompleted
        MessageBox.Show(wvwMain.Source.ToString())
        LogMsg("wvwMain_NavigationCompleted")
    End Sub

    Private Sub wvwMain_WebMessageReceived(sender As Object, e As CoreWebView2WebMessageReceivedEventArgs) Handles wvwMain.WebMessageReceived
        LogMsg("wvwMain_WebMessageReceived")
    End Sub

    Private Async Function InitializeCoreWebView2Async(Optional userDataFolder As String = "") As Task
        Dim options As CoreWebView2EnvironmentOptions = Nothing
        Dim cwv2Environment As CoreWebView2Environment = Nothing

        '   It's recommended to create the userDataFolder in the same location
        '   that your other application data is stored (ie: in a folder in %APPDATA%)
        '   if not specified, we'll create a folder in %TEMP%
        If String.IsNullOrEmpty(userDataFolder) Then
            userDataFolder = Path.Combine(Path.GetTempPath(), Reflection.Assembly.GetExecutingAssembly().GetName().Name)
        End If

        '   Create WebView2 Environment using the installed or specified WebView2 Runtime version.
        'cwv2Environment = Await CoreWebView2Environment.CreateAsync("C:\Program Files (x86)\Microsoft\Edge Dev\Application\1.0.1054.31", userDataFolder, options)
        cwv2Environment = Await CoreWebView2Environment.CreateAsync(Nothing, userDataFolder, options)
        '   Initialise.
        Await wvwMain.EnsureCoreWebView2Async(cwv2Environment)
    End Function

    Private Sub wvwMain_HistoryChanged(sender As Object, e As Object)
        LogMsg("wvwMain_HistoryChanged")
        'btnBack.Enabled = WebView21.CoreWebView2.CanGoBack
        'btnForward.Enabled = WebView21.CoreWebView2.CanGoForward
        '   Update the Address Bar.
        UpdateAddressBar()
    End Sub

    Private Sub LogMsg(msg As String, Optional addTimestamp As Boolean = True)
        If addTimestamp Then
            msg = $"{Now.ToString("yyyy/MM/dd HH:mm:ss.fff")} - {msg}"
        End If

        Debug.WriteLine(msg)
    End Sub

    Private Sub UpdateAddressBar()
        ''   If necessary, update address bar.
        'If textBoxAddressBar.Text <> wvwMain.Source.ToString() Then
        '    textBoxAddressBar.Text = wvwMain.Source.ToString()

        '    'move cursor to end of text
        '    textBoxAddressBar.SelectionStart = textBoxAddressBar.Text.Length
        '    textBoxAddressBar.SelectionLength = 0
        'End If
    End Sub

    Private Sub WebsiteNavigate(ByVal dest As String)
        If wvwMain IsNot Nothing AndAlso Not String.IsNullOrWhiteSpace(dest) Then
            '   URL must start with one of the specified strings
            '   if Not, pre-pend with "https://"
            If Not dest = "about:blank" AndAlso Not dest.StartsWith("edge://") AndAlso
               Not dest.StartsWith("file://") AndAlso Not dest.StartsWith("http://") AndAlso
               Not dest.StartsWith("https://") AndAlso
               Not System.Text.RegularExpressions.Regex.IsMatch(dest, "^([A-Z]|[a-z]):") Then
                '   Set Value
                dest = "https://" & dest
            End If

            '   Option 1.
            'wvwMain.Source = New Uri(dest, UriKind.Absolute)
            '   Option 2.
            wvwMain.CoreWebView2.Navigate(dest)
            '   Update the Address Bar.
            UpdateAddressBar()
        End If
    End Sub
End Class

Please let me know what I am doing wrong here.

We are back up and running - we had been using the .NET Framework WebBrowser control, and the approach we took was replacing that component with WebView2, which is also a Microsoft component. Grabbed from NuGet and required relatively minimal code changes. You will have a new dependency on having the WebView2 runtime installed on client machines. It is not present on all machines by default.

Has anyone got any luck on work around ? or has there been any update on this issue ? 

We must find solution by tomorrow. It is going to have massive financial impact to us. 

Hoping for some update/ Workaround on this issue. Please share. 

Hi everyone, thanks for your patience,

Please see an update on the recent issues that some users of 3rd party apps are experiencing when trying to authenticate to the API.

There are two distinct errors (below): 

• "Allow Access" page not displaying correctly 
  This is caused by 3rd party apps using unsupported browser versions in their implementations. We have worked to quickly develop and release a patch which should mitigate the issues with the “"Allow Access” button not displaying correctly when authorising a user for an app. This patch will only fix the display issue with the "Allow Access" window and may not fix any issues with redirecting the user back to the app after authentication. These issues are due to an unsupported browser implementation, in which case the developer will need to update their app to support the latest browser version. 
  
  
• App unable to complete the authentication process
  Some apps are using browser implementations which are no longer supported, impacting the authentication process. The developer will need to update the app to a supported browser version. MYOB recommends using the latest version of your web browser, or at least the previous version. 

 We apologise for the inconvenience. If you are a developer and require further assistance, please contact API support via the form below: 

https://apisupport.myob.com/hc/en-us/requests/new?ticket_form_id=215283. 

Trish_Lee LiamM Matiu DilipB Mike_James Illek rfeng Kerry_Busby Phil_Jeffrey_KC 

The issue I have is that my apps used the Microsoft WebBrowser control (IE) to handle the OAuth process.  Microsoft has released a new control called the EdgeBrowser control, but this doesn't seem to work with the redirects that happens in OAuth, as it requires a predefined list of trusted domains/URLs. If a URL isn't on the Trusted Domains list, the URL opens in a new default browser window instead of the control.

Trish_Lee LiamM Matiu DilipB Mike_James Illek 
I will have an update for you in the next 30mins with some more information - thanks MG

MikeG1, There must be a workaround for this issue. I have 200+ invoices to export to MYOB and need to pay over 60 Suppliers today by 4 p.m.

I Spent over two hours on the phone with the MYOB Support team to find a workaround, but they could not find a solution. I was told to raise this issue with the API, but I do not have the Developer ID or API key to do so. 

Like another user on this Forum, I have been using MYOB software for over 15 years, but I have never felt this helpless. Still waiting for some positive update in next couple of hours. 

Can you provide an optional rollback of yesterday’s update? This is going to cause a lot of short term pain. 

Hi Trish_Lee LiamM DilipB & Matiu 
I have an update from our internal team that was investigating this. Thanks for your patience.

This is related to the 3rd party app developers using an old version of IE that has not been supported since 2022.
The developers of these apps will need to upgrade to a supported browser in order for services to be restored.

I understand that this is disruptive for your businesses and your customers, but it will be up to the app developers to resolve this for you.

Kind regards, Mike