在Windows Server 2012 r2上部署时出现BadImageFormatException

Question

I am deploying my Asp.net application on Windows Server 2012 R2(x64). I get a runtime BadImageFormatException while using 64-bit dll. When I run it with IIS Express or application published on local machine IIS everything works well (Application pools -> solution name -> Enable 32-bit applications set to False, All projects in solution are also set for Platform target x64). Deploy is going through Team City & Octopus Deploy.

What the solution could be?

UPD System.BadImageFormatException: An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B) at libxl.XmlBook.xlCreateXMLBookC() at xxx.Controllers.xxx.xxxController.LibxlTest() in C:\\TeamCity\\buildAgent\\work\\aeb63fe0b246a1f3\\xxx\\xxx\\Controllers\\xxx\\xxx\\xxxController.cs:line 597

There is no such path C:\\TeamCity\\buildAgent\\ on server whrere the Octopus Tentacle is.

Answer 1

Finally, it works with x86 (from bin folder) version while the solution was build for x64. Probably, it is a peculiarity of libxl . Thus, I'm developing with x64 and after deploy my post-deploy script changes it for x86 version.

Answer 2

OK, it looks like you or one of your references has a dependency on libXL .

Your exception result ( 0x8007000B ) is definitely a 32-bit can't load on 64-bit issue.

libXL is C++ project, in the download zip there's a bin64 folder with a copy of libxl.dll that will work in 64-bit mode.

If you have a libXL licensed copy better to use the 64-bit dll from that.

Note that C:\\TeamCity\\buildAgent\\ comes from the machine your project was built on, the line numbers etc get saved into your pdb files.