I am having a visual studio 2010 window service application in .net framework version 3.5 but I need to use a dll in my service which was built in .net framework version 4.0.So I have upgraded my version to 4.0 but while installing my service i am having system.BadImageFormatException.How to fix this.Please suggest some solution.
This is the error message I am getting
Error 1001.Exception occurred while initializing the installation: System.BadImageFormatExceptio: could not load file or assembly 'file://C:.....exe' or more or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded.
Thanks in advance
The application and the DLL (including all dependencies of each) must all be either 32-bit or 64-bit. Most likely, the binaries you are using are not. To fix the problem build or otherwise obtain access to the correct binaries.
If this is not the problem, the "remarks" section of the documentation lists all the reasons that can cause this exception to be thrown, including solutions for each.
Related
I have created an installer with Visual Studio 2008. VS project type is deployment project. This installer fails in some environments but also runs perfectly in some other environments.
For example, the installer is compiled in virtual machine that runs Windows Server 2012 R2 Standard. Of course installation succeeds there. How ever, it fails in other virtual machine running same Windows edition.
The error message is: "Error 1001. Exception occurred while initializing the installation: System.BadImageFormatException: Could not load file or assembly 'file: Custom actions.dll' or one of its dependencies. This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded."
Target framework is 3.5 in all applications in the installer solution. Also the references in Custom Actions library have .NET version 2.0 or 3.5.
What is missing in the failing environment? Where to start the search?
Blog: Maybe check this blog quickly. Essentially: 1) bitness 32/64, 2) corrupted binary file or 3) configuration issues (app.config).
InstallUtilLib.dll: Here is a similar answer: System.BadImageFormatException: Could not load file or assembly (from installutil.exe). It links to this MSDN explanation: 64-bit managed custom actions throw a System.BadImageFormatException exception. Seems likely.
Alternatives: The real answer - IMHO - would be to avoid Visual Studio Installer projects due to a number of known problems with this type of project. The WiX toolkit is a good open source alternative. And there are other, commercial options. And there is an alternative version with more elaborate details.
Some Links:
System.BadImageFormatException: Could not load file or assembly
BadImageFormatException Class
This assembly is built by a runtime newer than the currently loaded runtime and cannot be loaded
There are really only two reasons for this error:
You have 32-bit (or 64-bit) code trying to call an assembly of the opposite architecture. In custom action calls you'll need to chase down the calling sequence and be careful of AnyCpu types of assembly that may be JIT compiled to the architecture of the system rather than assemblies you'll call.
Incompatible NET architectures. In your case, the assemblies you referred to are all NET 2.0 CLR-based. If they end up running in a NET 4.0 CLR they will fail. It may help to look at the Launch Conditions to see what's going on.
I also think Visual Studio 2008 is not a good basis for a setup project. VS Community Edition is free, and will host the add-on Installer Projects. Certainly VS 2008 is unaware of NET 4.0 CLR.
Goal:
From a .NET 4.7 console app, using reflection with Assembly.GetType(), I am trying extract the Type of a netstandard 2.0 class from Assembly X. Then I want to create an instance of this Type with Activator.CreateInstance().
What I am trying to do:
However, this assembly X has a dependency to netstandard 2.0. To be able to get the Type, netstandard dependency has to be loaded into the AppDomain. That's why when the AppDomain is requesting the netstandard assembly through the AssemblyResolve event, I simply load the dll like this :
var netStandardDllPath = #"C:\Users\xxx\.nuget\packages\NETStandard.Library.2.0.0-preview1-25301-01\build\netstandard2.0\ref\netstandard.dll";
return Assembly.LoadFrom(netStandardDllPath);
Which throws:
System.BadImageFormatException: 'Could not load file or assembly
'file:///C:\Users\vincent.lerouvillois.nuget\packages\NETStandard.Library.2.0.0-preview1-25301-01\build\netstandard2.0\ref\netstandard.dll'
or one of its dependencies. Reference assemblies should not be loaded
for execution. They can only be loaded in the Reflection-only loader
context. (Exception from HRESULT: 0x80131058)'
Inner Exception: BadImageFormatException: Cannot load a reference
assembly for execution.
What I know:
I know that they want us to load the DLL with Assembly.ReflectionOnlyLoadFrom. But doing that will prevent me from instanciate the type with Activator.CreateInstance(). See Microsoft official post
Also, I tried referencing the Nuget packages NETStandard.Library 2.0.0-preview1-25301-01 and NETStandard.Library.NETFramework 2.0.0-preview1-25305-02 in my console app so it would have the netstandard 2.0 libraries referenced, but it didn't change anything.
Question:
Does anyone would know if there is a proper way to load that dll without error, or maybe if this is a bug, or else? Or why this kind of dll is not able to load for execution?
The netstandard.dll you are trying to load is a reference assembly that which cannot be loaded for runtime on .NET Framework as pointed out by others. However if you need to resolve that dependency you will need to runtime version that maps to the framework you are trying to run on.
For .NET Standard support we are including them as part of the msbuild extensions that ship with VS so you will want to get the version of netstandard.dll from there. Depending on which version of VS2017 you have installed it should be somewhere like C:\Program Files (x86)\Microsoft Visual Studio\2017\Community\MSBuild\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\netstandard.dll or from the .NET Core 2.0 SDK you can find it C:\Program Files\dotnet\sdk\2.0.0\Microsoft\Microsoft.NET.Build.Extensions\net461\lib\netstandard.dll
Try using one of those versions in your scenario.
Wow. I just spent several hours tracking the cause of this "could not load ... netstandard" error down.
For me, the problem was that my .NET Framework project (which references both .NET Framework and .NET Standard libraries) was built with .NET Framework 4.7.2 and the system where I was deploying and running it did not have 4.7.2 installed.
Deploying a very small Console project with the same basic structure and references and executing that in a Command window finally revealed the correct error, in a pop-up, that .NET Framework 4.7.2 was missing.
If you're struggling with this particular error, make sure you have the necessary .NET Framework installed.
Set Copy Local to true in netstandard.dll properties.
Open Solution Explorer and right click on netstandard.dll.
Set Copy Local to true.
You can't load a reference assembly.
.NET Standard is a collection of APIs that must be provided by .NET Standard compatible implementations.
A reference assembly only contains contracts. This means that it contains no implementation. The assembly you are trying to load contains the .NET Standard 2.0 contracts.
A contract looks like this: https://github.com/dotnet/standard/blob/master/netstandard/ref/mscorlib.cs
EDIT: .NET Framework 4.7 implements .NET Standard 2.0, so you shouldn't need to load any assembly to use Activator.CreateInstance() to instantiate a .NET Standard type.
NETStandard 2.0.0-preview1 in not compatibility with net461 and net47.
but for realese .NET Core SDK 2.0 assemblies (as well as 2.0.0-preview2)
var netStandardDllPath = #"c:\Program Files\dotnet\sdk\NuGetFallbackFolder\microsoft.netcore.app\2.0.0\ref\netcoreapp2.0\netstandard.dll";
Console.WriteLine(Assembly.LoadFrom(netStandardDllPath).FullName);
all is ok.
But if you steel need to load preview1 libraries, maybe you should to use netstandard2.0 instead net471.
For me solved doing the following:
1 - Installed latest .Net Framework on server.
2 - Updated windows server and my local machine.
3 - Went to Manage Nuget Package and updated all references on the update tab.
Perhaps only doing step 3 can solve in your case
In case if IBM Message Queue references are used in the project solution, this exception indicates that the DLL used for refering MQ classes are incompatible with the host(server) .NET version installed.
In this scenario, either we need to update server with latest update and make sure .NET latest version is available or use lower version of IBM Message queue DLL as reference.
Old version DLL - amqmdnet.dll (no new features will be introduced by IBM as not in support)
Latest version DLL - amqmdnetstd.dll (to run IBM MQ classes for .NET Standard, you must install Microsoft .NET Core)
Install NetStandard.Library 2.0.0.0 from NuGet , It works for me. when I downgrade .net framework 4.6.1 to 4.6.0
If you are having this issue for a project that used to work, try deleting the bin and obj folders since caching can cause this, too.
I have downloaded published (code behind files are no there, combined with dll in bin folder) web application from Window Server 2008 where it is hosted, and open it with Visual Studio when I debug that application it shows following error:
"Could not load assembly because this assembly is built by a runtime newer than the currently loaded runtime"
I don't know how can I solve this problem and test application locally.
Please help me.
This errors happens when the DotNet framework you are using is of older version than the one used to build the assembly. You need to check which version of framework is used to build those assemblies and then use the same or higher to debug too.
I was getting this same error when running an installer for a Windows service, even when running the installer on the PC the installer was built on.
It turned out that although the Windows service project had been updated to .NET 4.5, the Setup project that was making the installer was still set to use .NET 2.0.
To check if the Setup project is using an older version of .NET than the project to be installed, in the Visual Studio Solution Explorer:
Expand the Setup project;
Under the Setup project, expand Detected Dependencies;
Under Detected Dependencies select Microsoft .NET Framework and check the Version property. Select the appropriate .NET version from the dropdown list;
Re-build the Setup project to create a new version of the installer.
This error can have a lot of other reasons, too. I had the same problem, and nothing helped until I stumbled across this:
TlbExp.exe error:This assembly is built by a runtime newer
I just ran into this issue when the assembly was built with a target framework of .NET 4, and v4.0.30319 was installed on the server, and other 4.0 apps were running successfully.
The problem arose because the app had originally been built targeting 2.0, and new 4.0 assemblies were pushed, but not the app.config file, which we generally update separately.
This means the supportedRuntime attribute was not updated in the config and caused the error. Adding the following to the app.config fixed our issue:
<startup><supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/></startup>
One the the assemblies reference in the project might be built using a newer version of .net, check version of every assembly reference and correct accordingly.
Also check the application pool that this web site is running as. It could be framework 2.0 default on some older windows servers. Change it to framework 4.0.
I am having a strange issue with a C# .NET 4.0 dll (running with a stub/test application) working with a Firebird database. The setup seems to be correct but when the Firebird (2.5.2 I think) client/dll/provider needs to throw an exception, I always get the following:
Failure: System.TypeLoadException : Could not load type 'System.Runtime.CompilerServices.ExtensionAttribute' from assembly 'mscorlib, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
So, for instance, if I change my connection string to not point to my DB file, it will give this exception instead of something more relevant. This happens whether or not I debug it from Visual Studio 2010 or whether I go and run the EXE manually.
There's another person working on the same code who doesn't have this problem, so it doesn't seem like it would be code related.
Has anybody seen or heard of anything like this? It's getting frustrating to have to guess what the exception is trying to tell me.
UPDATE: So it seems as though everything is x86, so it doesn't look like it's a bit-ness mismatch. And I've checked and double checked that I had the right version of the provider (e.g. NETProvider-3.0.2-Net40). I'm still getting the TypeLoadException.
For reference, in case it inspires anyone, I'm running Windows XP 32 bit. The other person who gets relevant/real exceptions is on Windows 7 (possibly 64 bit).
The problem is that you are using the .NET 4.5 version of the Firebird .NET provider on a .NET 4 system. Microsoft made .NET 4.5 an in-place update, keeping it version 4.0.0.0, while at the same time moving around things like System.Runtime.CompilerServices.ExtensionAttribute to mscorlib to be able to use extension methods in mscorlib. When the .NET 4.5 compiled version is running on .NET 4 it can't locate the class because it is in a different library than expected.
Bottom line: make sure you install the .NET 4 version (NETProvider-3.0.2.0-NET40.7z) from http://www.firebirdsql.org/en/net-provider/
This information is also described on this blog.
You typically get this error when you have a mismatch in bitness. Make sure both your Firebird driver (and all the dependent DLLs downstream) and your executable are set to the same bitness.
Tried with different firebug providers versions, finally
updating .NET to 4.5 on server machine worked for me.
.NET 4.5 download:
http://go.microsoft.com/?linkid=9810134
I am upgrading an application and running into some issues with it.
Now the old application was version 1.0 and loading a depedency assembly A at version 2.1.1 The assembly is present in application local directory.
I am upgrading the new application to version 2.0 that will load assembly A version 1.0.1 which is present in its application local directory. I've checked application references using ISpy and confirmed the new application references A version 1.0.1
But when I start the new application (v 2.0), it is still trying to load assembly version 2.1.1 and failing. I checked the app.config, machine.config and GAC and there is no redirection for version of assembly A. I also checked fusion log files but don't see any redirection. All I see is the fusion log is that application prebinds A at version 2.1.1 and hence fails to set up the assembly present in its local directory.
Is there something I am missing here? What could be the possible reasons for application still referencing the older assembly at runtime?
Update: Using some tools, I realized the the older assembly is being referenced from a native DLL that is referenced by my application, but I don't know which third party DLL is that, and the application loads a ton of them. The fusion log confirms it by logging "Calling assembly : (Unknown)." for the missing assembly.
Now my next step is to find which dll is referencing the wrong assembly and fix that. Now the problem is that ILSpy tool doesn't show the native DLLs references, and DLLDepends tool does not show the assemblies references, so I am not able to link the two.
thanks
Since the library your trying to reference is supposed to be apart of the GAC; you may want to try:
Control Panel
Small Icons(Administrative Tools)
Event Viewer
Application
Windows itself should throw an exception with some particular details it's attempting to reference when it has an error. Especially if it's apart of the GAC. It was more helpful for me to hone in mscoree.dll and mscorelib.dll libraries fairly easy. Granted those clients that I used that for had corrupt framework; but Event Viewer told me the exact library that it had an issue with.
You may want to try that. Not sure which library; but keep in mind this is usually beneficial to libraries that are found within the %windir%/Assembly folder. Hope that helps.