Designer Never Opens
See original GitHub issueEnvironment
Microsoft Visual Studio Community 2022 Version 17.6.5 VisualStudio.17.Release/17.6.5+33829.357 Microsoft .NET Framework Version 4.8.09037
Installed Version: Community
Visual C++ 2022 00482-90000-00000-AA975 Microsoft Visual C++ 2022
ADL Tools Service Provider 1.0 This package contains services used by Data Lake tools
ASA Service Provider 1.0
ASP.NET and Web Tools 17.6.326.62524 ASP.NET and Web Tools
Azure App Service Tools v3.0.0 17.6.326.62524 Azure App Service Tools v3.0.0
Azure Data Lake Tools for Visual Studio 2.6.5000.0 Microsoft Azure Data Lake Tools for Visual Studio
Azure Stream Analytics Tools for Visual Studio 2.6.5000.0 Microsoft Azure Stream Analytics Tools for Visual Studio
C# Tools 4.6.0-3.23259.8+c3cc1d0ceeab1a65da0217e403851a1e8a30086a C# components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.
Common Azure Tools 1.10 Provides common services for use by Azure Mobile Services and Microsoft Azure Tools.
Entity Framework Core Power Tools 2.5 Adds useful design-time EF Core DbContext features to the Visual Studio Solution Explorer context menu.
Extensibility Message Bus 1.4.21 (main@8f226a8) Provides common messaging-based MEF services for loosely coupled Visual Studio extension components communication and integration.
JustMock 2023.2.601.35 Telerik JustMock Extension.
Microsoft Azure Hive Query Language Service 2.6.5000.0 Language service for Hive query
Microsoft Azure Stream Analytics Language Service 2.6.5000.0 Language service for Azure Stream Analytics
Microsoft JVM Debugger 1.0 Provides support for connecting the Visual Studio debugger to JDWP compatible Java Virtual Machines
Mono Debugging for Visual Studio 17.6.41 (790a401) Support for debugging Mono processes with Visual Studio.
NuGet Package Manager 6.6.0 NuGet Package Manager in Visual Studio. For more information about NuGet, visit https://docs.nuget.org/
Progress Telerik UI for WinForms Extension 2023.2.714.61 Progress® Telerik® UI for WinForms Extension
Progress Telerik UI for WPF Extension 2023.2.714.61 Progress® Telerik® UI for WPF Extension
Progress Telerik WinForms Converter 2023.2.606.53 Progress® Telerik® UI for WinForms Converter
Razor (ASP.NET Core) 17.6.0.2327201+a6a61fdfa748eaa65aab53dab583276e26af4a3e Provides languages services for ASP.NET Core Razor.
SQL Server Data Tools 17.6.13.0 Microsoft SQL Server Data Tools
Telerik Reporting Tools 3.44.11.0 Complete .NET Reporting Solution for Web, Mobile and Desktop Applications. For more information please visit http://www.telerik.com/reporting.
ToolWindowHostedEditor 1.0 Hosting json editor into a tool window
TypeScript Tools 17.0.20329.2001 TypeScript Tools for Microsoft Visual Studio
Visual Basic Tools 4.6.0-3.23259.8+c3cc1d0ceeab1a65da0217e403851a1e8a30086a Visual Basic components used in the IDE. Depending on your project type and settings, a different version of the compiler may be used.
Visual F# Tools 17.6.0-beta.23174.5+0207bea1afae48d9351ac26fb51afc8260de0a97 Microsoft Visual F# Tools
Visual Studio IntelliCode 2.2 AI-assisted development for Visual Studio.
VisualStudio.DeviceLog 1.0 Information about my package
VisualStudio.Mac 1.0 Mac Extension for Visual Studio
VSPackage Extension 1.0 VSPackage Visual Studio Extension Detailed Info
Xamarin 17.6.0.251 (d17-6@318364c) Visual Studio extension to enable development for Xamarin.iOS and Xamarin.Android.
Xamarin Designer 17.6.6.0 (remotes/origin/d17-6@cb430751d1) Visual Studio extension to enable Xamarin Designer tools in Visual Studio.
Xamarin.Android SDK 13.2.0.6 (d17-5/a200af1) Xamarin.Android Reference Assemblies and MSBuild support. Mono: 6dd9def Java.Interop: xamarin/java.interop/d17-5@149d70fe SQLite: xamarin/sqlite/3.40.1@68c69d8 Xamarin.Android Tools: xamarin/xamarin-android-tools/d17-5@9f02d77
.NET version
<TargetFramework>net7.0-windows</TargetFramework>
<PlatformTarget>x64</PlatformTarget>
<UseWindowsForms>true</UseWindowsForms>
<UseWPF>true</UseWPF>
Did this work in a previous version of Visual Studio and/or previous .NET release?
Yes - it worked in the last release of VS Community 2022 under Net 7.
Issue description
It gets stuck on Loading Designer
Steps to reproduce
Right click on View Designer and it just hangs.
I spent several hours looking for troubleshooting guides on this. It seems like the missing file errors are the issue but I didn’t add or remove those files from the system.
Diagnostics
15:32:06:392 [15:32:06.381638] info: Shadow caching completed.
15:32:06:392 [15:32:06.387622] info: IServerConnectionTimeoutProvider: Starting execution of winFormsOptions task.
15:32:06:392 [15:32:06.388619] info: IServerConnectionTimeoutProvider: WinFormsOptions task completed.
15:32:06:392 [15:32:06.388619] info: Obtained ServerConnectionTimeout value: 120000.
15:32:06:392 [15:32:06.389617] info: Obtained OutputWindowLoggingService.
15:32:06:508 [15:32:06.398594] info: [UIProject]: Launching design tools server process...
15:32:07:070 [15:32:06.968072] info: [UIProject]: Connected to named pipe: DesignToolsServer.33aa362c-cda9-4f23-a526-ebce77af649b
15:32:07:070 [15:32:06.988019] info: [UIProject]: Connecting to pipe: DesignToolsServer.33aa362c-cda9-4f23-a526-ebce77af649b...
15:32:07:070 [15:32:06.988019] info: [UIProject]: Successfully connected to pipe: DesignToolsServer.33aa362c-cda9-4f23-a526-ebce77af649b
15:32:07:070 [15:32:06.989045] info: [UIProject]: Creating DesignToolsServer [thread 1]
15:32:07:070 [15:32:06.993005] info: [UIProject]: Starting UI thread [thread 1]
15:32:07:070 [15:32:06.994003] info: [UIProject]: Performing start up tasks [thread 6]
15:32:07:316 [15:32:07.082763] info: [UIProject]: UI thread started
15:32:07:316 [15:32:07.087752] info: [UIProject]: Wait for start up tasks to complete... [thread 6]
15:32:07:366 [15:32:07.145596] info: [UIProject]: Loaded server manifest [thread 8]
15:32:07:366 [15:32:07.145596] info: [UIProject]: Loading design-time assemblies [thread 8]
15:32:07:366 [15:32:07.182551] info: [UIProject]: Loading design-time assembly dependencies [thread 8]
15:32:07:615 [15:32:07.452138] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'System.ServiceModel.Syndication, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
15:32:07:615 File name: 'System.ServiceModel.Syndication, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
15:32:07:615 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:615 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:615 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:615
15:32:07:615 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:615 [15:32:07.469526] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'System.Runtime.Serialization.Schema, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'. The system cannot find the file specified.
15:32:07:615 File name: 'System.Runtime.Serialization.Schema, Version=0.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a'
15:32:07:615 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:615 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:615 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:615
15:32:07:615 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:709 [15:32:07.536320] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'System.IO.Ports, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
15:32:07:709 File name: 'System.IO.Ports, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
15:32:07:709 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:709 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:709 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:709
15:32:07:709 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:709 [15:32:07.544327] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'System.Data.OleDb, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
15:32:07:709 File name: 'System.Data.OleDb, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
15:32:07:709 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:709 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:709 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:709
15:32:07:709 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:709 [15:32:07.545323] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'System.Data.Odbc, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'. The system cannot find the file specified.
15:32:07:709 File name: 'System.Data.Odbc, Version=0.0.0.0, Culture=neutral, PublicKeyToken=cc7b13ffcd2ddd51'
15:32:07:709 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:709 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:709 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:709
15:32:07:709 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:709 [15:32:07.640188] fail: [UIProject]: System.IO.FileNotFoundException: Could not load file or assembly 'Microsoft.AnalysisServices.AdomdClient, Version=19.16.3.4, Culture=neutral, PublicKeyToken=89845dcd8080cc91'. The system cannot find the file specified.
15:32:07:709 File name: 'Microsoft.AnalysisServices.AdomdClient, Version=19.16.3.4, Culture=neutral, PublicKeyToken=89845dcd8080cc91'
15:32:07:709 at System.Reflection.RuntimeAssembly.InternalLoad(AssemblyName assemblyName, StackCrawlMark& stackMark, AssemblyLoadContext assemblyLoadContext, RuntimeAssembly requestingAssembly, Boolean throwOnFileNotFound)
15:32:07:709 at System.Reflection.Assembly.Load(AssemblyName assemblyRef)
15:32:07:709 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.LoadReferencedAssemblies(AssemblyName[] referencedAssemblyNames, HashSet`1 serverDependenciesNames, CancellationToken cancellationToken)
15:32:07:709
15:32:07:709 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:07:816 [15:32:07.770381] info: [UIProject]: Building MEF composition
15:32:08:253 [15:32:08.157347] info: [UIProject]: Disposing DesignToolsServer [thread 8]
15:32:08:253 [15:32:08.165324] fail: [UIProject]: Failed to launch design tools server process process
15:32:08:253 System.ArgumentException: An item with the same key has already been added. Key: vsUI/IsVsInUIState
15:32:08:253 at System.Collections.Generic.Dictionary`2.TryInsert(TKey key, TValue value, InsertionBehavior behavior)
15:32:08:253 at System.Collections.Generic.Dictionary`2.Add(TKey key, TValue value)
15:32:08:253 at Microsoft.DotNet.DesignTools.Protocol.ProtocolDefinition.AddEndpoints(IEnumerable`1 endpoints)
15:32:08:253 at Microsoft.DotNet.DesignTools.Protocol.ProtocolDefinition.Create(CompositionHost compositionHost)
15:32:08:253 at Microsoft.DotNet.DesignTools.Server.ServerProtocolContext.Create(ITypeIdentityResolutionService typeIdentityResolution, ILiveObjectService liveObjectService, DesignToolsServer designToolsServer, IEnumerable`1 designTimeAssemblies, IEnumerable`1 exportDescriptorProviders, ILoggerFactory loggerFactory)
15:32:08:253 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.StartUpAsync(CancellationToken cancellationToken)
15:32:08:253 at Microsoft.DotNet.DesignTools.Server.DesignToolsServer.StartListeningAsync(Stream stream, TraceListener traceListener)
15:32:08:253 at Microsoft.DotNet.DesignTools.Server.Program.<>c__DisplayClass2_0.<<Main>b__1>d.MoveNext()
15:32:08:253
15:32:08:253 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:08:253 [15:32:08.176269] fail: Microsoft.DotNet.DesignTools.Client.ServerException: Failed to launch the design tools server process.
15:32:08:253 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
15:32:08:253 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
15:32:08:253 at Microsoft.VisualStudio.Threading.TplExtensions.<WithTimeout>d__5.MoveNext()
15:32:08:253 --- End of stack trace from previous location where exception was thrown ---
15:32:08:253 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
15:32:08:253 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
15:32:08:253 at Microsoft.DotNet.DesignTools.Client.Host.ServerProcess.<LaunchAsync>d__28.MoveNext()
15:32:08:253 --- End of stack trace from previous location where exception was thrown ---
15:32:08:253 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
15:32:08:253 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
15:32:08:253 at Microsoft.DotNet.DesignTools.Client.Host.ServerHostFactory.<CreateHostAsync>d__8.MoveNext()
15:32:08:253 --- End of stack trace from previous location where exception was thrown ---
15:32:08:253 at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()
15:32:08:253 at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
15:32:08:253 at Microsoft.DotNet.DesignTools.Client.DesignToolsClientLoader.<CreateClientAsync>d__29.MoveNext()
15:32:08:253
15:32:08:253 For information on how to troubleshoot the designer refer to the guide at https://aka.ms/winforms/designer/troubleshooting.
15:32:08:565 [15:32:08.498640] warn: Cannot update selection in server process as Session is not connected.
Issue Analytics
- State:
- Created 2 months ago
- Comments:6 (4 by maintainers)

Top Related StackOverflow Question
@Olina-Zhang @merriemcgaw Now you say that, it was also coincidental with a Telerik upgrade. I will also share this Telerik as well.
This errors come from stub forward only libraries like System.Data. Which do not have a direct link from anywhere in project.