SAP BW Connection Failure Error 38348CCE After Installing Windows Patch

Published: 03 Aug 2023
Last Modified Date: 01 Sep 2023


Tableau Desktop and Tableau Server cannot connect to SAP BW after applying a Windows patch KB5028166, KB5028169

           The connection to the data source might have been lost.

Error Code: 38348CCE

The connection to sapbw had a fatal error and was disconnected.
ExternalProtocol:PipMessageSource:ReadBytes: Communication with the Tableau Server Protocol Server process was lost. Tableau Protocol Server process might be terminated, possibly due to system resource constraints or another external source.


  • Tableau Desktop
  • Tableau Server
  • SAP NetWeaver Business Warehouse


Contact Microsoft and SAP BW for guidance on any updates to this patch. See SAP Knowledgebase article for more info.

As a potential workaround, uninstall the KB5028166 and/or KB5028169 Windows Security update.


After installing Windows Security update KB5028166 and/or KB5028169, SAP BW connections are failing. See SAP Knowledgebase article for more info.


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