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Editorial Team
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Asked: 2026-06-05T21:25:53+00:00

A little knowledge can be a dangerous thing. Now that I’ve had a run

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A little knowledge can be a dangerous thing.

Now that I’ve had a “run in” with depending on various .NET runtimes being installed on a user’s machine, I want to be as “safe” and code as defensively as possible.

However, if I add this to my App.config file:

<startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v1.0.3705"/>
    <supportedRuntime version="v1.1.4322"/>
    <supportedRuntime version="v2.0.50727"/>
    <supportedRuntime version="v3.0"/>
    <supportedRuntime version="v3.5"/>
    <supportedRuntime version="v4.0"/>
    <supportedRuntime version="v4.0.30319"/>
  </startup>

…is it tantamount to wearing suspenders, a belt, AND a cat suit?

(I’m targeting .NET 4 “standard”)

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1 Answer

  1. Editorial Team

    No, but are you really using zero features of .NET 2.0+?

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