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Home/ Questions/Q 256569
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Editorial Team
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Editorial Team
Asked: May 11, 20262026-05-11T22:01:30+00:00 2026-05-11T22:01:30+00:00

Help! I have a clickonce app built and published using .Net 2.0. This app

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Help!

I have a clickonce app built and published using .Net 2.0. This app has a number of .Net dll’s all built using .Net 2.0. However when I publish the app, and try to install it I get a message saying that version 3.5 of .Net is required!

I’ve tried my best to track down what component could require .Net 3.5, first by checking and rebuilding everything, and then using ILDASM to look at the file headers. Can’t find anything relating to .Net 3.5 at all and I am at my wits end!

Any ideas how to resolve this?

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  1. Editorial Team
    Editorial Team
    2026-05-11T22:01:30+00:00Added an answer on May 11, 2026 at 10:01 pm

    Try changing the “Required Components” (not sure whether that is the exact term – using German VS2008) on the “Publish” tab in the project properties. .NET 3.5 might still be marked as a required component, even though it should be .NET 2.0.

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