.NET native images created with NGEN are not loaded
.net, fuslogvw, image, native, ngen
Solution
Assembly manager loaded from: C:\Windows\Microsoft.NET\ Framework64\v4.0.30319\clr.dll
Your process is running in 64-bit mode, the default with the AnyCPU target on a 64-bit operating system. That requires that you run the 64-bit version of ngen.exe. Be sure to select the proper Visual Studio Command Prompt. There are two, the one that sets up the environment for 64-bit tools is named "Visual Studio x64 Win64 Command Prompt (2010)" in the Start menu.
Problem
I have used NGEN to create native images of several assemblies used by my application. However, those images are not loaded when running the application and I have no idea why. This is a typical log from fuslogvw: ``` *** Assembly Binder Log Entry (2/05/2012 @ 13:29:04) *** The operation failed. Bind result: hr = 0x80070002. The system cannot find the file specified. Assembly manager loaded from: C:\Windows\Microsoft.NET\Framework64\v4.0.30319\clr.dll Running under executable C:\MyDir\MyApp.exe --- A detailed error log follows. === Pre-bind state information === LOG: User = ***\*** LOG: DisplayName = MyAssembly, Version=1000.0.0.0, Culture=neutral, PublicKeyToken=null (Fully-specified) LOG: Appbase = file:///C:/MyDir/ LOG: Initial PrivatePath = NULL LOG: Dynamic Base = NULL LOG: Cache Base = NULL LOG: AppName = MyApp.exe Calling assembly : PresentationFramework, Version=4.0.0.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35. === LOG: Start binding of native image MyAssembly, Version=1000.0.0.0, Culture=neutral, PublicKeyToken=null. WRN: No matching native image found. LOG: IL assembly loaded from C:\MyDir\MyAssembly.dll. ``` And the information from ngen.exe about that assembly: ``` C:\MyDir>ngen display MyAssembly.dll Microsoft (R) CLR Native Image Generator - Version 4.0.30319.1 Copyright (c) Microsoft Corporation. All rights reserved. NGEN Roots: C:\MyDir\MyAssembly.dll NGEN Roots that depend on "C:\MyDir\MyAssembly.dll": C:\MyDir\MyAssembly.dll Native Images: MyAssembly, Version=1000.0.0.0, Culture=neutral, PublicKeyToken=null ``` I used the ngen.exe located in C:\Windows\Microsoft.NET\Framework\v4.0.30319\ and my assembly's target framework is .NET Framework 4. I didn't recompile the assembly after having created the native image. Any help would be appreciated.