Error Code: 20B40A5E "Failed to read metadata for serviceURL" Upon Connecting to OData

Published: 12 Oct 2020
Last Modified Date: 08 Jul 2022


Upon trying to connect to OData from Tableau Desktop, the following error occurs:
An error occurred while communicating with OData
Unable to connect to the server. Check that the server is running and that you have access privileges to the requested database.
Error Code: 20B40A5E 
Failed to read metadata for serviceURL <url> and entitySetName <entity>. The table <table> does not exist.



  • Tableau Desktop 2020.2.4
  • Windows 10
  • Odata


Modify the OData connection, to add a forward slash (/) onto the end of the server url and reauthenticate.



Odata unable to establish connection without the correct url
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