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Why am I getting ‘could not load file or assembly’ errors?
Especially while installing a new dev machine, and building your project for the first time, you may end up getting the following exception: Could not load file or assembly ‘ [assemblyname]’ or one of its dependencies. An attempt was made to load a program with an incorrect format.
Why is my Assembly not working?
The most common cause in my experience is that you made a change to a referenced assembly that requires rebuilding other assemblies using that changed assembly, and didn’t rebuild them.
How to debug assembly loading problems in a program?
You can use the Fusion Log Viewer to debug assembly loading problems in .NET apps. Also, Process Monitor is very useful in identifying general file-load problems. Show activity on this post.
Why does my assembly load 32 bit instead of 64 bit?
One of the assemblies is set to a specific platform i.e. 64 bit or 32 bit while the other is set or defaults to a different one. Check if both assemblies are for the same platform, preferably “Any CPU”. In other words it could be that a 64 bit assembly is trying to load 32 bit one or vice versa.
Could not load a file or assembly?
In summary if you get the “Could not load file or assembly error”, this means that either your projects or their references were built with a reference to a specific version of an assembly which is missing from your bin directory or GAC.
Could not load file or assembly DLL or one of its dependencies?
There are some workarounds for this issue: The dll file may not be in /bin folder. Just copy the dll file to /bin folder or set this preference Copy Local = True from Visual Studio. If the problem persists, check if the version of the assembly that is referenced is different than the version it is looking for.
Could not load file or assembly web or one of its dependencies An attempt was made to load a program with an incorrect format?
“An attempt was made to load a program with an incorrect format.” That means that the assembly, which was to be loaded, was in an unexpected format. The format, in this case, refers most likely to 64-bit build of an application being deployed to IIS, which is being run in 32-bits.
Could not load file or assembly atalasoft Dotimage or one of its dependencies An attempt was made to load a program with an incorrect format?
To resolve this issue: Click Stop. Click Advanced Settings. Expand the General section and set Enable 32-bit Applications to False . Click OK.
Could not load file or assembly Telerik Sitefinity resources?
For Cause 2:Create a backup of the Sitefinity project files and the database.Open the Sitefinity project’s bin folder.Delete the assemblies which start with SitefinityWebApp.* For example: SiteifnityWebApp.ResourcePackages.Bootstrap.dll.Open the project in Visual Studio.Build the solution.Run the project in browser.
How do I fix BadImageFormatException?
BadImageFormatException: how to fix this (annoying) errorif your project is 64 bit, check if the loading dll is 64 too. … if your project is 32 bit, check if the loading dll is 32 too. … if the previous points are respected, check this weird Visual Studio option: Any CPU – Prefer 32 bit.
How do I enable 32 bit applications in IIS Express?
If you want to run 32bit application on Win64, please refer to the steps below to set up the IIS:Go to current server – > Application Pools.Select the application pool your 32-bit application will run under.Click Advanced setting or Application Pool Default.Set Enable 32-bit Applications to True.
Could not load file or assembly Leadtools DLL or one of its dependencies The specified module could not be found?
This error generally occurs when either a file or dependency is missing, or when there is an architectural issue with the project targeting the incorrect DLLs. So the first thing to check is that the Leadtools. dll that you are trying to load in your ASP.NET application actually exists in the correct location.
Reason
The latter part of the error message should point you to the right direction. “An attempt was made to load a program with an incorrect format.” That means that the assembly, which was to be loaded, was in an unexpected format.
Solution: Change the IIS Express to run in 64b
I’ll explain below, how to do this in 4 simple steps. Like, really simple.
