How to fix Error 2348 on Windows Server 2025 / Windows 11

by

Troubleshooting Guide: SQL Server Error 2348 — “A namespace URI should contain at least one non-whitespace character”

Why This Error Happens

This error occurs when SQL Server 2025 attempts to parse an XML schema or SSIS package configuration that contains a malformed or empty xmlns (namespace) attribute. It is typically triggered by corrupted SSIS package XML files, improperly exported/imported DTSX packages, or manual edits to configuration files that leave a namespace declaration blank or filled with only whitespace characters. Third-party deployment tools or source control merge conflicts can also introduce stray whitespace into XML namespace URIs during automated builds.

Step-by-Step Resolution Guide

Step 1: Identify the Offending XML File

  • Check the SQL Server Agent job history or SSIS execution logs for the exact package (.dtsx) or configuration file (.xml) referenced alongside Error 2348.
  • Open Event Viewer on Windows Server 2025 under Applications and Services Logs > Microsoft > SQL Server to confirm the timestamp and associated file path.
  • Use findstr /s /i "xmlns=\"\"" C:\SSIS\Packages\*.dtsx in Command Prompt to quickly scan for empty namespace declarations.

Step 2: Repair the Malformed Namespace Declaration

  • Open the identified .dtsx or .xml file in a text editor such as VS Code or Notepad++ (not Notepad, to preserve encoding).
  • Search for any xmlns=" or xmlns:xsi=" entries followed immediately by a closing quote or only spaces/tabs before the closing quote.
  • Replace the blank value with the correct, fully qualified namespace URI (e.g., xmlns="www.microsoft.com/SqlServer/Dts" for SSIS packages).
  • Save the file using UTF-8 encoding without BOM to avoid introducing hidden whitespace characters.

Step 3: Validate and Re-import the Package

  • Open SQL Server Management Studio (SSMS) 2025 and connect to the Integration Services catalog.
  • Right-click the SSISDB catalog, select Validate, and re-deploy the corrected package using dtutil /FILE "C:\SSIS\Packages\PackageName.dtsx" /COPY SQL;PackageName.
  • If the package was stored in msdb, run EXEC msdb.dbo.sp_validatepackage to confirm the XML structure passes schema validation.

Step 4: Clear Cached Package Metadata

  • Restart the SQL Server Integration Services 18.0 service via services.msc on Windows Server 2025 to flush any cached package metadata referencing the broken namespace.
  • Clear the local SSIS package cache folder, typically located at C:\Program Files\Microsoft SQL Server\160\DTS\Packages, after backing up the originals.

Alternative or Verification Steps

  • Re-run the SSIS job or query that originally triggered Error 2348 and confirm it completes without namespace-related warnings in the SQL Server Agent Job History.
  • If the error persists, use an XML validator (e.g., xmllint --noout file.dtsx) to pinpoint any remaining schema violations, or restore the package from a known-good backup and reapply recent changes manually.