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Home/ Questions/Q 960503
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Editorial Team
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Editorial Team
Asked: May 16, 20262026-05-16T01:11:31+00:00 2026-05-16T01:11:31+00:00

I am using a quickbooks sdk that containst the QBFC8Lib dll everything works fine

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I am using a quickbooks sdk that containst the QBFC8Lib dll
everything works fine on my dev machine.
when I publish to my live server I get the following error:

System.BadImageFormatException: Could not load file or assembly 'Interop.QBFC8Lib' or one of its    

enter code heredependencies. An attempt was made to load a program with an incorrect format

I have the sdk installed on both my dev machine and the live machine. still getting this error

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  1. Editorial Team
    Editorial Team
    2026-05-16T01:11:32+00:00Added an answer on May 16, 2026 at 1:11 am

    You areexactly right. on the server I went to the application pool for this application and needed to set enable 32 bit applications to true. That did it. Thanks for your help

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