When running MAUI app in .net 9 in debug it works but without debugging is not

Dani_S 4,051

Hi,

I moved from maui app in .NET 8 to .NET 9.

The project build but n debug it works but without debugging the login page is not opened.

I checked all nugets packages and moved to last.

================================




<ItemGroup>

 <PackageReference Include="Microsoft.Maui.Controls" Version="$(MauiVersion)" />

<PackageReference Include="CommunityToolkit.Maui" Version="9.0.0" />

<PackageReference Include="System.Management" Version="9.0.1" />

<PackageReference Include="Telerik.UI.for.Maui" Version="8.0.0" />

<PackageReference Include="Microsoft.Extensions.Logging.Log4Net.AspNetCore" Version="8.0.0" />

<PackageReference Include="Autofac" Version="8.2.0" />

<PackageReference Include="DotNetZip" Version="1.16.0" />

</ItemGroup>

<!-- Windows -->

<ItemGroup Condition="$(TargetFramework.Contains('-windows')) == true">

<PackageReference Include="WindowsAPICodePack" Version="8.0.6" />

</ItemGroup>

This is my xaml.cs

===========

public partial class App : Application

 {

private static Mutex mutex = new Mutex(true, Assembly.GetEntryAssembly().GetName().Name);

public App()

 {

if (!mutex.WaitOne(TimeSpan.Zero, true))

 {

Current.Quit();

Environment.Exit(0);

 }

InitializeComponent();

MainPage = new LoginPage();

 }

protected override Window CreateWindow(IActivationState? activationState)

 {

Window window = base.CreateWindow(activationState);

try

 {

window.Stopped += async(s,e) =>

 {

if (!string.IsNullOrEmpty(LoginConfigurations.GetInstance().SessionToken ))

 {

var container = new Bootstrapper().Bootstrap();

IAutomationApiClient automationApiClient = container.Resolve<IAutomationApiClient>();

var results = await automationApiClient.PostLogOut($"{LoginConfigurations.GetInstance().Portal}/api/GSPortal/PostLogOut/false", LoginConfigurations.GetInstance().SessionToken);

if(results)

 {

App.Current.Quit();

 }

 }

 };

 }

catch (Exception)

 {

 }

return window;



 }

 }

}

I comment the mutex code + CreateWindow same problem.

How to solve the problem ?

Dani_S 4,051 Reputation points

2025-02-03T06:52:00.84+00:00

Can you please answer?
Leon Lu (Shanghai Wicresoft Co,.Ltd.) 79,396 Reputation points Microsoft Vendor

2025-02-03T08:07:44.81+00:00

Firstly, if you use the Telerik.UI.for.Maui.8.0.0 NuGet package and .NET 9, you must also install the Microsoft.Maui.Controls.Compatibility package

Or update your Telerik.UI.for.Maui to 9.0.0 from

If your project uses the Telerik.UI.for.Maui.8.0.0 NuGet package and .NET 9, you must also install the Microsoft.Maui.Controls.Compatibility package. This is needed because Telerik UI for .NET MAUI version 8.0.0 depends on Microsoft's compatibility package, which is no longer included in the default .NET MAUI App project template. This dependency has been removed in Telerik UI for .NET MAUI version 9.0.0.
Dani_S 4,051 Reputation points

2025-02-03T08:37:08.97+00:00

I moved to telerik 9 and same poroblem,what to do
Dani_S 4,051 Reputation points

2025-02-03T08:52:19.52+00:00

How di I clean the cache=> delete bin and obj or it something else.

if it is can you send screenshot, how is done

Leon Lu (Shanghai Wicresoft Co,.Ltd.) 79,396 Microsoft Vendor

Please remove MainPage = new LoginPage(); . change the CreateWindow method like following code. Will you get the same issue?

  protected override Window CreateWindow(IActivationState? activationState)
 
   {
 
       Window window = new Window(new LoginPage());
 
       try
 
       {
 
           window.Stopped += async (s, e) =>
 
           {
 

 
           };
 
       }
 
       catch (Exception)
 
       {
 
       }
 
       return window;
 
 
   }

Dani_S 4,051 Reputation points

2025-02-03T09:14:45.8833333+00:00

got same issue, I clean cache + bin + obj of maui app and project references(there bin and obj)

my shred project have

<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>

<TargetFramework>net9.0</TargetFramework>

<ImplicitUsings>enable</ImplicitUsings>

<Nullable>enable</Nullable>

</PropertyGroup>

</Project>

and my api have

<Project Sdk="Microsoft.NET.Sdk">

<PropertyGroup>

<TargetFramework>net9.0</TargetFramework>

</PropertyGroup>

<ItemGroup>



<PackageReference Include="Autofac" Version="8.2.0" />

<PackageReference Include="Newtonsoft.Json" Version="13.0.3" />

</ItemGroup>

<ItemGroup>

<ProjectReference Include="..\GssdDesktopClient.Shared\GssdDesktopClient.Shared.csproj" />

</ItemGroup>

</Project>

Do you see any problems ?
Dani_S 4,051 Reputation points

2025-02-03T09:48:37.4133333+00:00

In problem tab it mentioned:

Activating task providers dotnet

Activating task providers all

2 answers

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Bruce (SqlWork.com) 70,611 Reputation points

2025-02-03T17:52:58.86+00:00

typically this is caused by using a library that does not support AOT (uses reflection, etc):

https://learn.microsoft.com/en-us/dotnet/maui/deployment/nativeaot?view=net-maui-9.0

you can disable AOT. (I'd suspect autofac, and replace it with Services).

https://github.com/abpframework/abp/issues/21019
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Dani_S 4,051 Reputation points

2025-02-03T19:30:57.0633333+00:00

I disable autofac and still problem not solved,

Your quick answer will be appreciated

Dani_S 4,051 Reputation points

2025-02-03T20:08:18.3333333+00:00

.....

Dani_S 4,051 Reputation points

2025-02-03T20:55:03.7133333+00:00

Your quick answer will be appreciated

Dani_S 4,051 Reputation points

2025-02-04T16:57:16.0233333+00:00

I check is not autofac. What could be the problem.
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When running MAUI app in .net 9 in debug it works but without debugging is not

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