[Crystal Reports] Could not load file or assembly crdb_adoplus.dll

Updated on April 22, 2016     Kisan Patel

Problem:

How to solve the following exception occurring with Crystal Reports in Windows/WPF Application.

Solution:

You need to add the following attribute to the startup tag.

useLegacyV2RuntimeActivationPolicy="true"

After adding above property to startup tag, your App.Config file should look like below.

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