FIX: Error 18204 during automatic backup in virtual machines when the backup file is split into multiple files

Applies to: SQL Server 2017 DeveloperSQL Server 2017 EnterpriseSQL Server 2017 Enterprise Core

Symptoms


Assume that you use automatic backups for Microsoft SQL Server in virtual machines. If the backup database size is more than about 200 GB and the file is split into multiple files, after each backup a RESTORE HEADERONLY operation will fail in the background. Additionally, you may see error messages that resemble the following:

Resolution


This fix is included in the following updates for SQL Server:

Cumulative Update 13 for SQL Server 2017

Cumulative Update 5 for SQL Server 2016 Service Pack 2

Cumulative Update 13 for SQL Server 2016 Service Pack 1

Status


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

References


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