Request.QueryString was detected in the Asp.net MVC client

I'm having trouble when the user confirms an email via the Asp default registry. The user receives a link in html format and clicks on the link and the user gets an error from the application server.

Server Error in Application '/ myaplica'. A possibly dangerous value Request.QueryString was detected on the client

I have already configured webconfig in the form below and without success. I already have days working on it and I will not solve it. Can you help?

<system.web>
    <customErrors mode="Off" />
    <authentication mode="None" />
    <compilation debug="true" targetFramework="4.6.1" />
    <httpRuntime  requestValidationMode="2.0" />
    <pages validateRequest="false"></pages>
    <httpModules>
        <add name="ApplicationInsightsWebTracking" type="Microsoft.ApplicationInsights.Web.ApplicationInsightsHttpModule, Microsoft.AI.Web" />
    </httpModules>
</system.web>