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Diagnostic Page Error - Invalid cast from System.String to Coveo.Framework.Configuration.SecurityConfiguration

This is for:

Developer System Administrator

Coveo for Sitecore (October 2016)

Coveo for Sitecore (December 2016)

Symptoms

On a Sitecore instance where the SwitchMasterToWeb.Coveo.config file is activated, you get the following error in the Coveo for Sitecore security provider information section of the Coveo Diagnostic Page:

This section is disabled because an unexpected error occurred (Invalid cast from 'System.String' to 'Coveo.Framework.Configuration.SecurityConfiguration'.). Resolve this error and hit the Refresh button to re-enable this section.

Cause

This error is due to the securityConfiguration node in the SwitchMasterToWeb.Coveo.config file. Sitecore expects this node to have a type, but because it doesn’t, the indexing manager fails to load.

Resolution

The issue is fixed by adding a securityConfiguration node of the right type in one of your configuration files.

  1. Open the Coveo.SearchProvider.config file. It’s usually located under <SITECORE_INSTANCE_ROOT>\Website\App_Config\Include\Coveo.

    While you’re usually discouraged from modifying the Coveo.SearchProvider.config file, for this procedure, to reduce the risk of unforeseen upgrade bugs, you’re encouraged to modify the Coveo.SearchProvider.config file over the Coveo.SearchProvider.Custom.config file.

  2. In the defaultIndexConfiguration node, after the </adminServiceConfiguration>  line, before <!-- Coveo Query configuration -->, add the following:

     <!-- Coveo security configuration -->
 <securityConfiguration type="Coveo.Framework.Configuration.SecurityConfiguration, Coveo.Framework" />

  3. Save and close the file.