Problem while uninstalling the setup

Question

I created aplication in .net framework 3.5 & created setup project in .net framework 4.0. I installed it on the machine which is having vs2010. But while uninstalling setup , it is trowing following exception-

Error 1001. An exception occurred while uninstalling. This exception will be ignored & the uninstall will continuw. However , the application might not be fully uninstalled after the uninstall is complete. -> Mixed mode assembly is built against version 'v2.0.50727' of the runtime and cannot be loaded in the 4.0 runtime without additional configration information.

I added some .net 2.0 dll in the setup as well as .net 4.0 dll too. Is it creating problem? But i don't think because i'm running it on the higher version. Then how it is throwing error?

How to solve this?

thanks

Am I right that you're trying to run application build on .Net2.0 with .Net4.0 ? — default locale, Sep 20 '11 at 11:32
possible duplicate of [Mixed mode assembly in .NET 4](http://stackoverflow.com/questions/3179028/mixed-mode-assembly-in-net-4) — Hans Passant, Sep 20 '11 at 11:44
@Hans Passant: I worked on the link what you have given. But it is still throwing an error. — Priyanka, Sep 20 '11 at 11:49
You added just a couple of dll to the setup? why not let the setup handle the requirements? do you have any custom action on uninstall? — gbianchi, Sep 20 '11 at 13:30

score 0 · Answer 1 · answered Jun 07 '12 at 21:00

You can solve that by adding a .config file containing the following to your project allowing mixed mode assembly

this is the "additional configration information" it wants:

<?xml version="1.0" encoding="utf-8" ?>
<configuration>
  <startup useLegacyV2RuntimeActivationPolicy="true">
    <supportedRuntime version="v4.0" sku=".NETFramework,Version=v4.0"/>
  </startup>
</configuration>

Problem while uninstalling the setup

1 Answers1