When you access Trends or Filters there is a popup displayed with the message:

• Unexpected server error. View Director server event logs for further information.

Event logs shows:

• Failed to connect to data source..

CDF Trace displays a generic exception:
 

System.AggregateException: One or more errors occurred. --->
Citrix.Dmc.Common.ConnectorException: Monitoring Service --->
Citrix.Dmc.Common.CommunicationException: Monitoring Service --->
System.Data.Services.Client.DataServiceQueryException: An error occurred while processing this request

Connection string is configured with a custom port, you can check on the DDC from powershell: Get-MonitorDBConnection -DataStore Monitor

EXMAPLE: "Server=SQLSERVER\INSTANCE, 12345;Initial Catalog=DATABASENAME;Integrated Security=True"

 

The above mentioned sample code is provided to you as is with no representations, warranties or conditions of any kind. You may use, modify and distribute it at your own risk. CITRIX DISCLAIMS ALL WARRANTIES WHATSOEVER, EXPRESS, IMPLIED, WRITTEN, ORAL OR STATUTORY, INCLUDING WITHOUT LIMITATION WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NONINFRINGEMENT. Without limiting the generality of the foregoing, you acknowledge and agree that (a) the sample code may exhibit errors, design flaws or other problems, possibly resulting in loss of data or damage to property; (b) it may not be possible to make the sample code fully functional; and (c) Citrix may, without notice or liability to you, cease to make available the current version and/or any future versions of the sample code. In no event should the code be used to support ultra-hazardous activities, including but not limited to life support or blasting activities. NEITHER CITRIX NOR ITS AFFILIATES OR AGENTS WILL BE LIABLE, UNDER BREACH OF CONTRACT OR ANY OTHER THEORY OF LIABILITY, FOR ANY DAMAGES WHATSOEVER ARISING FROM USE OF THE SAMPLE CODE, INCLUDING WITHOUT LIMITATION DIRECT, SPECIAL, INCIDENTAL, PUNITIVE, CONSEQUENTIAL OR OTHER DAMAGES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. Although the copyright in the code belongs to Citrix, any distribution of the sample code should include only your own standard copyright attribution, and not that of Citrix. You agree to indemnify and defend Citrix against any and all claims arising from your use, modification or distribution of the sample code.

Remove a space from connection string. Please see the steps below.

On the DDC open Powershell as administrator and run:

add-pssnapin Citrix.*

Check existing connection string using one of the cmdlets:

Get-MonitorDatastore 
Get-MonitorDBConnection -DataStore Monitor 

Copy the connection string, remove space and create variable, example:

$x = "Server=SQLSERVER\INSTANCE,12345;Initial Catalog=DataBaseName;Integrated Security=True" 

Reset and change connection string:

Set-MonitorDBConnection -DataStore Monitor -DBConnection $null 

Set-MonitorDBConnection -DataStore Monitor -DBConnection $x 

 

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Problem Cause

Space in the connection string.