KB4578008 - FIX: Managed backup is not backing up the database when SQL Agent system jobs are changed to different name other than 'sa' in SQL Server 2016 and 2017

Applies to: SQL Server 2017 Developer on WindowsSQL Server 2017 Enterprise Core on WindowsSQL Server 2017 Enterprise on Windows

Symptoms


Assume that you use ALTER LOGIN to change the nameof the built-in [sa] account to increase security on the instance of SQL Server 2016 or 2017. In this situation, you may find that Managed Backup and Automated Backup no longerfunction correctly. For example, [msdb].[managed_backup].[sp_backup_config_basic] stored procedure will run without any errors, but there will not be any changes made to the Managed Backupconfiguration. Additionally, databases will not be backed up even if theManaged Backup configuration appears to be correct.

More information


If you trace activity when running stored proceduresfrom the [msdb].[managed_backup] schema, you may notice a call to the[msdb].[dbo].[sp_sqlagent_set_job_completion_state] stored procedure with a@last_outcome_message parameter value of 
The job failed.  The owner (sa)of job smart_admin_job_[GUID] does not have server access.

Status


Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section. 

Resolution


This issue is fixed in the following cumulative updates for SQL Server:
About cumulative updates for SQL Server:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:

Workaround


To work around this issue, you may:
  • Temporarily rename the sa account to 'sa'.
  • Upgrade to SQL Server 2019 in which the issue has been fixed already.

References


Learn about the terminology that Microsoft uses to describe software updates.