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