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:

date time spid# Error: 18204, Severity: 16, State: 1.
date time spid# BackupDiskFile::OpenMedia: Backup device ‘Backup file address’ failed to open. Operating system error 2 (The system cannot find the file specified.).


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

About SQL Server builds

Each new build for SQL Server contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest build for your version of SQL Server:

SQL Server 2017 build versions

Latest cumulative update for SQL Server 2016


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


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

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