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404 Errors on Coveo Usage Analytics Search Events

This is for:

Developer System Administrator

Coveo for Sitecore (September 2016)

Symptoms

Click and Custom analytics events are sent to Coveo Usage Analytics (Coveo UA), but Search events are returning a 404 error.

Cause

The Coveo for Sitecore REST Analytics endpoint has a limited query string length value. If the URL length is higher than this value, it’s truncated and becomes no longer valid.

Resolution

There are two ways to fix this issue:

  1. Upgrade at least to the September 2016 release of Coveo for Sitecore. This is the recommended option.

  2. Manually modify the web.config file:

    1. Navigate to the <sitecore instance>\Website\Coveo\rest folder and open the web.config file.

    2. Replace the content of the file with the following:

       <?xml version="1.0"?>

 <configuration>
   <system.web>
     <httpRuntime maxQueryStringLength="32768" maxUrlLength="32768" />
   </system.web>
   <system.webServer>
     <handlers>
       <add name="CoveoSearchEndpoint" path="*" verb="*" type="Coveo.SearchProvider.Rest.SitecoreRestHttpHandlerDispatcher, Coveo.SearchProvider.Rest" />
     </handlers>
     <security>
       <requestFiltering>
         <requestLimits maxQueryString="32768" maxUrl="32768" />
       </requestFiltering>
     </security>
   </system.webServer>
 </configuration>