Citrix XenDesktop 7.6 – The Citrix servers do not trust the server.

Small hint for those, receiving following Citrix XenApp 7.6 error while opening any app from Receiver – “Cannot start app, please contact your help desk“:


Additionally, in the event log you find repeating errors from Citrix Store Service, EventID 0, message:

The Citrix servers do not trust the server. This message was reported from the XML Service at address http://deliverycontroller.domain.local/scripts/wpnbr.dll [NFuseProtocol.TRequestAddress].


All you need to do, is set up TrustRequestsSentToTheXmlServicePort from $false value to $true. Simply follow these steps:

  • Log on to your Delivery Controller and open powershell console
  • Load Citrix snapins:
  • ChangeTrustRequestsSentToTheXmlServicePort parameter value to $true:
  • And finally you may want to check the result by typing:

If value is set to $true, issue should be resolved.

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