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Editorial Team
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Asked: 2026-05-26T22:53:29+00:00

When would the following message be shown? Error 1 Unknown build error, ‘Cannot resolve

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When would the following message be shown?

Error 1 Unknown build error, ‘Cannot resolve dependency to assembly ‘Infragistics2.Win.v10.3, Version=10.3.20103.2015, Culture=neutral, PublicKeyToken=7dd5c3163f2cd0cb’ because it has not been preloaded. When using the ReflectionOnly APIs, dependent assemblies must be pre-loaded or loaded on demand through the ReflectionOnlyAssemblyResolve event.’

I have added few DLLs to an existing working project. I know it’s difficult to pin point the reason without the details on the code-base, but what I would like to know the general cause for such error messages to appear?

Note: Just created a fresh WPF project and added the bunch of new DLLs. The issue is present there also. Therefore, it’s highly likely that the issue is due to organization and content of the DLLs.

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1 Answer

  1. Editorial Team

    Proper version of Infragistics DLL was missing and adding it resolved the issue.

    Note: The problem is too localized and hence this solution is useful at local system only.

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