An exception "A procedure imported by 'CefSharp.Core.Runtime.dll' could not be loaded." on Debug-Mixed platform build

[LuxWang]

I found an exception while running some code on CefSharp 87.1.132.

The information in nuget management.
cef.redist.x64 & cef.redist.x86 v87.1.13
Cefsharp.common v87.1.132
Cefsharp.wpf v87.1.132

(This issue only happens on Debug-MixedPlatform, Release-x64, Release-MixedPlatform build)

code:
var webBrowser = new ChromiumWebBrowser(_options.StartUrl);

exception:

•   $exception	StackTrace = "   at CefSharp.Cef.get_IsInitialized()\r\n   at CefSharp.Wpf.ChromiumWebBrowser.NoInliningConstructor()\r\n   at CefSharp.Wpf.ChromiumWebBrowser..ctor(String initialAddress)\r\n   at Seagull.Administration.Module.AccountManagement.Utility.CefSharpEmbeddedBrowser.<InvokeAsync>d__1.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\Utilities\\CefSharpEmbeddedBrowser.cs:line 34\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.AuthorizeClient.<AuthorizeAsync>d__4.MoveNext()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<LoginAsync>d__9.MoveNext()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at Seagull.Administration.Module.AccountManagement.ViewModels.DigimarcAccountViewModel.<AuthenticateInternal>d__30.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\ViewModels\\DigimarcAccountViewModel.cs:line 280"	System.IO.FileLoadException
    StackTrace	"   at CefSharp.Cef.get_IsInitialized()\r\n   at CefSharp.Wpf.ChromiumWebBrowser.NoInliningConstructor()\r\n   at CefSharp.Wpf.ChromiumWebBrowser..ctor(String initialAddress)\r\n   at Seagull.Administration.Module.AccountManagement.Utility.CefSharpEmbeddedBrowser.<InvokeAsync>d__1.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\Utilities\\CefSharpEmbeddedBrowser.cs:line 34\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.AuthorizeClient.<AuthorizeAsync>d__4.MoveNext()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<LoginAsync>d__9.MoveNext()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at Seagull.Administration.Module.AccountManagement.ViewModels.DigimarcAccountViewModel.<AuthenticateInternal>d__30.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\ViewModels\\DigimarcAccountViewModel.cs:line 280"	string
  

•   Data	{System.Collections.ListDictionaryInternal}	System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
    Count	0	int
    IsFixedSize	false	bool
    IsReadOnly	false	bool
    IsSynchronized	false	bool
  

•   Keys	{System.Collections.ListDictionaryInternal.NodeKeyValueCollection}	System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
    SyncRoot	{object}	object
  

•   Values	{System.Collections.ListDictionaryInternal.NodeKeyValueCollection}	System.Collections.ICollection {System.Collections.ListDictionaryInternal.NodeKeyValueCollection}
  

•   Non-Public members		
  

•   Results View	Expanding the Results View will enumerate the IEnumerable	
    FileName	"CefSharp.Core.Runtime.dll"	string
    FusionLog	""	string
    HResult	-2147024769	int
    HelpLink	null	string
  

•   InnerException	null	System.Exception
    Message	"A procedure imported by 'CefSharp.Core.Runtime.dll' could not be loaded."	string
    Source	"CefSharp.Core"	string
  

•   TargetSite	{Boolean get_IsInitialized()}	System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo}
    Attributes	Public | Static | HideBySig | SpecialName	System.Reflection.MethodAttributes
    CallingConvention	Standard	System.Reflection.CallingConventions
    ContainsGenericParameters	false	bool
    CustomAttributes	Method System.Reflection.MemberInfo.get_CustomAttributes cannot be called in this context.	System.Collections.Generic.IEnumerable<System.Reflection.CustomAttributeData>
  

•   DeclaringType	{Name = "Cef" FullName = "CefSharp.Cef"}	System.Type {System.RuntimeType}
    IsAbstract	false	bool
    IsAssembly	false	bool
    IsConstructor	false	bool
    IsFamily	false	bool
    IsFamilyAndAssembly	false	bool
    IsFamilyOrAssembly	false	bool
    IsFinal	false	bool
    IsGenericMethod	false	bool
    IsGenericMethodDefinition	false	bool
    IsHideBySig	true	bool
    IsPrivate	false	bool
    IsPublic	true	bool
    IsSecurityCritical	Method System.Reflection.RuntimeMethodInfo.get_IsSecurityCritical cannot be called in this context.	bool
    IsSecuritySafeCritical	Method System.Reflection.RuntimeMethodInfo.get_IsSecuritySafeCritical cannot be called in this context.	bool
    IsSecurityTransparent	Method System.Reflection.RuntimeMethodInfo.get_IsSecurityTransparent cannot be called in this context.	bool
    IsSpecialName	true	bool
    IsStatic	true	bool
    IsVirtual	false	bool
    MemberType	Method	System.Reflection.MemberTypes
    MetadataToken	100663370	int
  

•   MethodHandle	{System.RuntimeMethodHandle}	System.RuntimeMethodHandle
    MethodImplementationFlags	Method System.Reflection.MethodBase.get_MethodImplementationFlags cannot be called in this context.	System.Reflection.MethodImplAttributes
  

•   Module	{CefSharp.Core.dll}	System.Reflection.Module {System.Reflection.RuntimeModule}
    Name	"get_IsInitialized"	string
  

•   ReflectedType	'((System.Reflection.RuntimeMethodInfo)($exception).TargetSite).ReflectedType' threw an exception of type 'System.NotSupportedException'	System.Type {System.NotSupportedException}
  

•   ReturnParameter	{System.Boolean }	System.Reflection.ParameterInfo
  

•   ReturnType	{Name = "Boolean" FullName = "System.Boolean"}	System.Type {System.RuntimeType}
    ReturnTypeCustomAttributes	Method System.Reflection.RuntimeMethodInfo.get_ReturnTypeCustomAttributes cannot be called in this context.	System.Reflection.ICustomAttributeProvider
  

•   Non-Public members		
  

I have checked the dll and pdb files in my build output folder. (\bin\Debug-win32)

The file size are all the same with the specified file in Cefsharp runtime x86 folder(packages\CefSharp.Common.87.1.132\CefSharp\x86 and packages\CefSharp.Common.87.1.132\runtimes\win-x86\lib\netcoreapp3.0)

So, I'm not sure why there is an error while CefSharp.Cef.get_IsInitialized().

By the way, the code works correctly in Debug-x64 build.(however have the exception in Debug-MixedPlatform, Release-x64, Release-MixedPlatform)

Looking forward to your reply, thank you so much for your help.

[amaitland]

What .Net version are you using? Are you using a SDK style project or a nom SDK style project? See https://docs.microsoft.com/en-us/nuget/resources/check-project-format if you are unsure.

Version 89.0.170 has quite a number of improvements to the Nuget packages, please try upgrading. If that doesn't resolve the problem then add a call to the CefSharpAfterBuildDiagnostic target after build in your project file. See
https://github.com/cefsharp/CefSharp.MinimalExample/blob/master/CefSharp.MinimalExample.Wpf/CefSharp.MinimalExample.Wpf.csproj#L181 for an example.

[LuxWang]

Thank you for your reply.

The Debug-mixedplatfrom in my solution is map to debug-x86 in my project.
You could refer to the snapshot of configuration manager.

We have done some test today, however, still couldn't find the root cause for the exception.

We also try these methods: the fusion log viewer and process monitor.
https://stackoverflow.com/questions/4602912/how-to-debug-could-not-load-file-or-assembly-runtime-errors
https://docs.microsoft.com/en-us/previous-versions/dotnet/netframework-4.0/e74a18c4(v=vs.100)?redirectedfrom=MSDN
https://docs.microsoft.com/en-us/sysinternals/downloads/procmon

The attachment is the log capture by process monitor, could you please take a look at it.
Attachment.zip

And we also get some log in fusion log viewer:

for example:
*** Assembly Binder Log Entry (4/9/2021 @ 2:47:16 PM) ***

The operation was successful.
Bind result: hr = 0x1. Incorrect function.

Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework\v4.0.30319\clr.dll
Running under executable D:\BarTender\BarTender\Dev\New\Epsilon\NewFeatures\bin\Debug-win32\XXX.exe
--- A detailed error log follows.

BEGIN : Native image bind.
END : Incorrect function. (Exception from HRESULT: 0x00000001 (S_FALSE))

From these logs, we could not identify the root cause for this exception.
(It looks like the loading for Cefsharp.core.runtime.dll is correctly, however calling Cef.IsInitialized would have the exception.)

Do you have any idea how to debug this exception??
We have a source control system, so we try both v87.1.132.0 and v89.0.170.0.
Unfortunately, both version only works correctly in the Debug-x64 build.

Thank you so much for your help.

[amaitland]

Did you trying calling Cef.Initialize in your WPF app class? By default this class is called App.xaml.cs

[LuxWang]

Thank you for your reply and help.

Yes, we have moved the initialization to App.xaml.cs but still have the "A procedure imported by 'CefSharp.Core.Runtime.dll' could not be loaded." exception.

1. I found that if the Cef.Initialize(settings) call is successful, the following process will appear. Is it possible that it is related to the process loading failure???

Debug-x64\CefSharp.BrowserSubprocess.exe

2. We have moved the initialization to App.xaml.cs , and currently only the Debug-x64 version is running correctly.
   1)In addition, If we use the following code, it will appear an exception in the Debug-x64 build.

        var options = new OidcClientOptions
    	{
    		Authority = @"https://...",
    		ClientId = "...",
    		RedirectUri = @"http://127.0.0.1/...",
    		Scope = "openid profile email",
    		Browser = new CefSharpEmbeddedBrowser(),
    		IdentityTokenValidator = new JwtHandlerIdentityTokenValidator()
    	};
   
    	OidcClient client = new OidcClient(options);
   

•   $exception	{"Error loading discovery document: Issuer name is missing"}	System.InvalidOperationException
  

•   Data	{System.Collections.ListDictionaryInternal}	System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
    HResult	-2146233079	int
    HelpLink	null	string
  

•   InnerException	null	System.Exception
    Message	"Error loading discovery document: Issuer name is missing"	string
    Source	"IdentityModel.OidcClient"	string
    StackTrace	"   at IdentityModel.OidcClient.OidcClient.<EnsureProviderInformationAsync>d__17.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<EnsureConfigurationAsync>d__16.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<LoginAsync>d__9.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at Seagull.Administration.Module.AccountManagement.ViewModels.DigimarcAccountViewModel.<AuthenticateInternal>d__30.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\ViewModels\\DigimarcAccountViewModel.cs:line 280"	string
  

•   TargetSite	{Void MoveNext()}	System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo}
  

2)　If we change to the following code, this exception will occur. (in the Debug-x64 build)

        var options = new OidcClientOptions
		{
			Authority = @"https://XXX/...",
			ClientId = "...",
			RedirectUri = @"http://127.0.0.1/...",
			Scope = "openid profile email",
			Browser = new CefSharpEmbeddedBrowser(),
			IdentityTokenValidator = new JwtHandlerIdentityTokenValidator()
		};
		options.Policy.Discovery.ValidateIssuerName = false;

		OidcClient client = new OidcClient(options);

•   $exception	{"Error loading discovery document: Error connecting to https://XXX Operation is not valid due to the current state of the object.."}	System.InvalidOperationException
  

•   Data	{System.Collections.ListDictionaryInternal}	System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
    HResult	-2146233079	int
    HelpLink	null	string
  

•   InnerException	{"Operation is not valid due to the current state of the object."}	System.Exception {System.InvalidOperationException}
    Message	"Error loading discovery document: Error connecting to https://XXX. Operation is not valid due to the current state of the object.."	string
    Source	"IdentityModel.OidcClient"	string
    StackTrace	"   at IdentityModel.OidcClient.OidcClient.<EnsureProviderInformationAsync>d__17.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<EnsureConfigurationAsync>d__16.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at IdentityModel.OidcClient.OidcClient.<LoginAsync>d__9.MoveNext()\r\n   at System.Runtime.ExceptionServices.ExceptionDispatchInfo.Throw()\r\n   at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)\r\n   at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()\r\n   at Seagull.Administration.Module.AccountManagement.ViewModels.DigimarcAccountViewModel.<AuthenticateInternal>d__30.MoveNext() in D:\\BarTender\\BarTender\\Dev\\New\\Epsilon\\NewFeatures\\Administration\\Modules\\AccountManagement\\ViewModels\\DigimarcAccountViewModel.cs:line 280"	string
  

•   TargetSite	{Void MoveNext()}	System.Reflection.MethodBase {System.Reflection.RuntimeMethodInfo}
  

3. If we use the following code, it will work correctly in the Debug-x64 build.
   I have no idea why setting ValidateIssuerName and ValidateEndpoints to false is needed.

        var options = new OidcClientOptions
    	{
    		Authority = @"https://XXX/...",
    		ClientId = "...",
    		RedirectUri = @"http://127.0.0.1/...",
    		Scope = "openid profile email",
    		Browser = new CefSharpEmbeddedBrowser(),
    		IdentityTokenValidator = new JwtHandlerIdentityTokenValidator()
    	};
    	options.Policy.Discovery.ValidateIssuerName = false;
    	options.Policy.Discovery.ValidateEndpoints = false;
   
    	OidcClient client = new OidcClient(options);
   

3. But the following code cannot be executed in debug-mixedplatform, release-mixedplatform, release-x64.
   it has an exception thrown from "Cef.IsInitialized" in in app.xaml.cs.

        if (!Cef.IsInitialized)
        {
            var settings = new CefSettings()
           {
               LogFile = @"D:Debug.log", //You can customise this path
              LogSeverity = LogSeverity.Default // You can change the log level
           };
   
           if (!Cef.Initialize(settings))
           {
              throw new InvalidOperationException("Cef.Initialize failed.");
           }
        }		
   

exception:

•   Data	{System.Collections.ListDictionaryInternal}	System.Collections.IDictionary {System.Collections.ListDictionaryInternal}
    FileName	"CefSharp.Core.Runtime.dll"	string
    Message	"A procedure imported by 'CefSharp.Core.Runtime.dll' could not be loaded."	string
  

[amaitland]

Can you provide an example that reproduces the problem?

• Please fork https://github.com/cefsharp/CefSharp.MinimalExample
• Add only the changes required to reproduce the problem
• Squash your changes into a single commit
• Push your changes to GitHub

As it stands I have no idea how to reproduce this and no other reports.

[LuxWang]

Thank you so much for your help.

Finally, we find a way to reproduce this issue.
Would you please refer to this discussion?
#3517

Thank you so much for your help.