As checked in experience profile, the analytics data is not loading up from last 1-2 months. Upon checking the xconnect logs we found below exception message:

7180 00:00:31 ERROR Cannot execute 'sessionEnd:batch:ended' event
Exception: System.AggregateException Message: One or more exceptions
occurred while processing the subscribers to the
'sessionEnd:batch:ended' event. Source: Sitecore.Kernel    at
Sitecore.Events.Event.EventSubscribers.RaiseEvent(String eventName,
Object[] parameters, EventResult result)    at
Sitecore.Events.Event.RaiseEvent(String eventName, Object[]
parameters)    at
eventName, Object[] parameters)

Nested Exception

**Exception: Sitecore.XConnect.XdbCollectionUnavailableException**
**Message: {   "Message": "Operation failed: The type initializer for
'AllowedTypesValidatorSerializationBinder' threw an exception." }**
Source: Sitecore.XConnect.Client    at
taskFactory)    at
at Sitecore.Analytics.Events.BatchEventHandler.OnBatchEnded(Object
sender, EventArgs args)    at
Sitecore.Events.Event.EventSubscribers.RaiseEvent(String eventName,
Object[] parameters, EventResult result)

Earlier we faced issues regarding the Device Detection but now we have checked, it seems to be working fine.

So any idea about this issue?

  • XdbCollectionUnavailableException is thrown when your application cannot connect to xConnect or when xConnect certificate is not valid. Maybe certificate expired? Or xConnect has some issues?
    – Marek Musielak
    Commented Oct 5, 2023 at 13:25
  • Most likely your certificate has expired or some network rules have been updated which dont allow your application to connect to xConnect.
    – Ghan
    Commented Oct 5, 2023 at 16:54
  • There is a similar one at sitecore.stackexchange.com/questions/24977/…. Hope it help.
    – Alexander
    Commented Oct 8, 2023 at 2:55

1 Answer 1


Please check the followings-

  1. Your certificate is both valid and accessible to the xConnect application.

  2. Solr is error-free.

  3. Kindly verify that you have created and deployed the custom model in accordance with the recommended link below - https://doc.sitecore.com/xp/en/developers/93/sitecore-experience-platform/deploy-a-custom-model.html

  4. Ensure that the custom model has been deployed under the Index Manager job within xConnect, and remember to restart the job afterward.

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.