Avamar: SQL backup fails with "SQL Server WMI provider is not available"

Summary: Avamar SQL backups fail with avsql Error 40258 reporting the SQL WMI provider is unavailable; this occurs because avagent runs under a domain user account instead of local SYSTEM, lacks sysadmin role. ...

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Symptoms

Avamar SQL backups may fail with errors similar to the following below:

avsql Error <40258>: sqlconnectimpl_smo::get_installed_instance_list Microsoft.SqlServer.Management.Smo.SmoException: SQL Server WMI provider is not available on SQLMACHINE. ---> System.Management.ManagementException: Invalid namespace

Cause

The Backup Agent (avagent) service is running with an NT domain user account, even though that account has the sysadmin role assigned in SQL Server Management Studio.

By default, the avagent service runs with the local SYSTEM account.

Resolution

To resolve the issue:

  1. Change the avagent service account back to the local NT Authority\SYSTEM account and restart the service.
  2. Verify that the NT Authority\SYSTEM account has the sysadmin role assigned in SQL Server Management Studio.
  3. If the above workaround is not feasible, open a new service request with Dell support and reference this KB article.

Affected Products

Avamar
Article Properties
Article Number: 000052980
Article Type: Solution
Last Modified: 24 سبتمبر 2026
Version:  7
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