Description

The following error might occur in Sitecore log files during authentication on the CES Discovery service used to update the device detection database:

WARN  Authentication on CES Discovery service failed.
Exception: System.Net.WebException
Message: The remote server returned an error: (403) Forbidden.
Source: System
   at System.Net.HttpWebRequest.GetResponse()
   at Sitecore.CES.Client.WebClient.<>c__DisplayClass6_0.b__0()
   at Sitecore.CES.Client.WebClient.Execute[T](Func`1 action, String requestUri)
   at Sitecore.CES.Client.ResourceConnector`1.Request(String endpoint, Object[] parameters)
   at Sitecore.CES.Discovery.EndpointSource.GetEndpoint(String serviceName)

ERROR Could not update device detection database
Exception: System.ArgumentNullException
Message: Null ids are not allowed.
Parameter name: endpointUri
Source: Sitecore.Kernel
   at Sitecore.Diagnostics.Assert.ArgumentNotNullOrEmpty(String argument, String argumentName)
   at Sitecore.CES.Client.WebClient.DownloadBinaryContent(String endpointUri, String resourcePath, DownladBinaryContentParameters parameters)
   at Sitecore.CES.DeviceDetection.Providers.FiftyOneDegrees.FiftyOneDeviceDetectionClient.GetNewerVersion()
   at Sitecore.CES.DeviceDetection.Providers.FiftyOneDegrees.FiftyOneDeviceDetectionClient.DoUpdate(String serviceName, String& newDatabasePath, String& newDatabaseVersion)
   at Sitecore.CES.DeviceDetection.Providers.DeviceDetectionClient.Update()

Solution

To resolve the issue, consider one of the following options:

• Upgrade Sitecore XP instance to Sitecore XP 9.0.2 or later.
• Download and install the hotfix compatible with the affected product version:
  
  • For Sitecore XP 9.0.1: SC Hotfix 205547-1 Sitecore CES 2.1.1.zip
  • For Sitecore XP 9.0.0: SC Hotfix 204620-1 Sitecore CES 2.1.0.zip

  Be aware that the hotfixes were built for specific Sitecore XP versions, and must not be installed on other Sitecore XP versions or in combination with other hotfixes. In case any other hotfixes have already been installed on a certain Sitecore XP instance, send a request for a compatibility check to Sitecore Support.

  Note that the ZIP file contents must be extracted to locate installation instructions and related files inside. The hotfixes must be installed on a CM instance and then synced with other instances using standard development practices.

  Note: In some cases, Experience Analytics charts and graphs might not be rendered after hotfix installation. Log out of Sitecore XP, and log in again to make them appear.

  You can find more details about hotfixes here: KB0077333