How to fix Error 2385 on Windows Server 2025 / Windows 11

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Troubleshooting Guide: SQL Server Error 2385 — Invalid Target Namespace Specified

Why This Error Happens

Error 2385 typically occurs when SQL Server 2025 attempts to process an XML-related operation (such as WMI-based queries, SQL Server Agent configuration, or XML schema validation) and encounters a namespace reference that does not match any registered or expected schema definition. This often results from corrupted WMI repository data, outdated or mismatched XML schema collections, or misconfigured management interfaces following an OS upgrade to Windows Server 2025 or Windows 11. In some cases, this also stems from SQL Server Configuration Manager failing to communicate properly with the WMI provider due to namespace registration issues introduced during installation or patching.

Step-by-Step Resolution Guide

Step 1: Verify and Rebuild the WMI Repository

  • Open an elevated Command Prompt on the affected Windows Server 2025 / Windows 11 machine.
  • Run winmgmt /verifyrepository to check if the WMI repository is consistent.
  • If inconsistencies are found, run winmgmt /salvagerepository to attempt an automatic repair.
  • As a last resort, run winmgmt /resetrepository (note: this will reset WMI to default state and may require reconfiguration of dependent services).

Step 2: Re-register the SQL Server WMI Provider

  • Navigate to the SQL Server installation directory, typically C:\Program Files\Microsoft SQL Server\160\Shared\.
  • Locate the file sqlmgmproviderxpsp2up.mof.
  • Run the command mofcomp sqlmgmproviderxpsp2up.mof to re-register the namespace definitions with WMI.
  • Restart the Windows Management Instrumentation service via services.msc or net stop winmgmt && net start winmgmt.

Step 3: Validate XML Schema Collections in the Database

  • Open SQL Server Management Studio (SSMS) and connect to the affected instance.
  • Run the query SELECT * FROM sys.xml_schema_collections WHERE name LIKE '%target%'; to identify any schema entries with malformed or missing namespace URIs.
  • Drop and recreate any corrupted schema collection using DROP XML SCHEMA COLLECTION followed by a correct CREATE XML SCHEMA COLLECTION statement referencing the valid namespace.

Step 4: Reapply SQL Server Configuration Manager Settings

  • Open SQL Server Configuration Manager as Administrator.
  • Right-click on SQL Server Services, select Refresh, and confirm that all namespace-dependent services (Agent, Browser, Engine) load without error.
  • If the error persists, uninstall and reinstall the Configuration Manager snap-in via mmc /unregister and mmc /register.

Alternative or Verification Steps

  • To verify the fix, restart the SQL Server and SQL Server Agent services, then check the Event Viewer (Windows Logs > Application) to confirm Error 2385 no longer appears.
  • As an alternative, if the issue persists, run the SQL Server 2025 Repair option from the installation media/Setup Wizard to restore default namespace bindings and WMI provider registrations.