32-bit DLL in 64-bit WebApp: An attempt was made to load a program with an incorrect format

by Oliver 30. October 2009 16:36

Die folgende Fehlermeldung erhielt ich heute von unserem IIS7, als ich Camping.Info starten wollte:

Server Error in '/' Application.

Could not load file or assembly 'Microsoft.Cci' or one of its dependencies. An attempt was made to load a program with an incorrect format.

Description: An unhandled exception occurred during the execution of the current web request. Please review the stack trace for more information about the error and where it originated in the code.

Exception Details: System.BadImageFormatException: Could not load file or assembly 'Microsoft.Cci' or one of its dependencies. An attempt was made to load a program with an incorrect format.

Also das Orakel gefragt und u.a. das hier gefunden: http://forums.asp.net/t/1358032.aspx

Standardmäßig unterstützt ein 64-bittiger IIS 7 keine 32-bit-Module (u.a. DLLs). Man kann es ihm aber einfach beibringen :-)

Im IIS-Manager den gewünschten ApplicationPool auswählen und in den Advanced Settings die folgende Einstellung vornehmen:



Der Vollständigkeit halber hier noch ein Link zur Anleitung für den IIS6 auf Windows 2003 Server: http://www.microsoft.com/technet/prodtechnol/WindowsServer2003/Library/IIS/405f5bb5-87a3-43d2-8138-54b75db73aa1.mspx?mfr=true

Happy Coding!

Oliver

Comments are closed

About Oliver

shades-of-orange.com code blog logo I build web applications using ASP.NET and have a passion for javascript. Enjoy MVC 4 and Orchard CMS, and I do TDD whenever I can. I like clean code. Love to spend time with my wife and our children. My profile on Stack Exchange, a network of free, community-driven Q&A sites

About Anton

shades-of-orange.com code blog logo I'm a software developer at teamaton. I code in C# and work with MVC, Orchard, SpecFlow, Coypu and NHibernate. I enjoy beach volleyball, board games and Coke.