Running IIS Express in 32-bit crashes my ASP.NET Core web application












0















I have an ASP.NET Core web application which I'm trying to run in 32-bit with IIS Express. I followed other guides and tips to make IIS run in 32-bit, but every time i try to run the application it crashes with the error message:




System.BadImageFormatException: Could not load file or assembly. An
attempt was made to load a program with an incorrect format.




I have tried the following:



Set the build and debug to run x86
32bit IIS Express image 1



32bit IIS Express image 2



And unchecked the Use the 64 bit version of IIS Express for web sites and projects
32bit IIS Express image 3



But my project still closes almost immediately with the error mention above. Is there a setting that I am forgetting about or something else I need to do before the project can run in 32-bit.



I'm using visual studio 2017 on Windows 10 with IIS Express version 10.0.14393.0 and AspNetCore 2.1










share|improve this question

























  • What’s the ASP.Core version? 2.1 and 2.2 are different.

    – Lex Li
    Nov 24 '18 at 17:59











  • For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

    – Tao Zhou
    Nov 26 '18 at 2:17











  • Sorry for the late response. @Lex My AspNetCore version is 2.1.

    – Tobiuo
    Nov 27 '18 at 8:12











  • Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

    – Tobiuo
    Nov 27 '18 at 8:16
















0















I have an ASP.NET Core web application which I'm trying to run in 32-bit with IIS Express. I followed other guides and tips to make IIS run in 32-bit, but every time i try to run the application it crashes with the error message:




System.BadImageFormatException: Could not load file or assembly. An
attempt was made to load a program with an incorrect format.




I have tried the following:



Set the build and debug to run x86
32bit IIS Express image 1



32bit IIS Express image 2



And unchecked the Use the 64 bit version of IIS Express for web sites and projects
32bit IIS Express image 3



But my project still closes almost immediately with the error mention above. Is there a setting that I am forgetting about or something else I need to do before the project can run in 32-bit.



I'm using visual studio 2017 on Windows 10 with IIS Express version 10.0.14393.0 and AspNetCore 2.1










share|improve this question

























  • What’s the ASP.Core version? 2.1 and 2.2 are different.

    – Lex Li
    Nov 24 '18 at 17:59











  • For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

    – Tao Zhou
    Nov 26 '18 at 2:17











  • Sorry for the late response. @Lex My AspNetCore version is 2.1.

    – Tobiuo
    Nov 27 '18 at 8:12











  • Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

    – Tobiuo
    Nov 27 '18 at 8:16














0












0








0








I have an ASP.NET Core web application which I'm trying to run in 32-bit with IIS Express. I followed other guides and tips to make IIS run in 32-bit, but every time i try to run the application it crashes with the error message:




System.BadImageFormatException: Could not load file or assembly. An
attempt was made to load a program with an incorrect format.




I have tried the following:



Set the build and debug to run x86
32bit IIS Express image 1



32bit IIS Express image 2



And unchecked the Use the 64 bit version of IIS Express for web sites and projects
32bit IIS Express image 3



But my project still closes almost immediately with the error mention above. Is there a setting that I am forgetting about or something else I need to do before the project can run in 32-bit.



I'm using visual studio 2017 on Windows 10 with IIS Express version 10.0.14393.0 and AspNetCore 2.1










share|improve this question
















I have an ASP.NET Core web application which I'm trying to run in 32-bit with IIS Express. I followed other guides and tips to make IIS run in 32-bit, but every time i try to run the application it crashes with the error message:




System.BadImageFormatException: Could not load file or assembly. An
attempt was made to load a program with an incorrect format.




I have tried the following:



Set the build and debug to run x86
32bit IIS Express image 1



32bit IIS Express image 2



And unchecked the Use the 64 bit version of IIS Express for web sites and projects
32bit IIS Express image 3



But my project still closes almost immediately with the error mention above. Is there a setting that I am forgetting about or something else I need to do before the project can run in 32-bit.



I'm using visual studio 2017 on Windows 10 with IIS Express version 10.0.14393.0 and AspNetCore 2.1







asp.net-core iis-express badimageformatexception






share|improve this question















share|improve this question













share|improve this question




share|improve this question








edited Nov 27 '18 at 8:31







Tobiuo

















asked Nov 23 '18 at 15:30









TobiuoTobiuo

782212




782212













  • What’s the ASP.Core version? 2.1 and 2.2 are different.

    – Lex Li
    Nov 24 '18 at 17:59











  • For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

    – Tao Zhou
    Nov 26 '18 at 2:17











  • Sorry for the late response. @Lex My AspNetCore version is 2.1.

    – Tobiuo
    Nov 27 '18 at 8:12











  • Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

    – Tobiuo
    Nov 27 '18 at 8:16



















  • What’s the ASP.Core version? 2.1 and 2.2 are different.

    – Lex Li
    Nov 24 '18 at 17:59











  • For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

    – Tao Zhou
    Nov 26 '18 at 2:17











  • Sorry for the late response. @Lex My AspNetCore version is 2.1.

    – Tobiuo
    Nov 27 '18 at 8:12











  • Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

    – Tobiuo
    Nov 27 '18 at 8:16

















What’s the ASP.Core version? 2.1 and 2.2 are different.

– Lex Li
Nov 24 '18 at 17:59





What’s the ASP.Core version? 2.1 and 2.2 are different.

– Lex Li
Nov 24 '18 at 17:59













For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

– Tao Zhou
Nov 26 '18 at 2:17





For the error, it is usually caused by the mismatch 32-bit / 64-bit conflict in your project. It seems you have set the main project to 32-bit, have you referenced any 64-bit library? Could you reproduce this issue with a new built-in asp.net core mvc project?

– Tao Zhou
Nov 26 '18 at 2:17













Sorry for the late response. @Lex My AspNetCore version is 2.1.

– Tobiuo
Nov 27 '18 at 8:12





Sorry for the late response. @Lex My AspNetCore version is 2.1.

– Tobiuo
Nov 27 '18 at 8:12













Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

– Tobiuo
Nov 27 '18 at 8:16





Sorry for the late response. @TaoZhou The only libraries I use are compiled as 32-bit hence why I need the project to run as 32-bit as well. But non of my libraries are loaded on startup, so that shoudn't be the issue

– Tobiuo
Nov 27 '18 at 8:16












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