After applying SQL Server 2019 Cumulative Update (CU) CU2/CU3/CU4 or SQL Server 2017 Cumulative Update (CU) CU19/CU20/CU21, when you to try to back up database by using VDI on SQL Server on Linux, you may notice that backup fails with the following error message: 

Opening the device.

VDS::OpenDevice fails: x80770004

Msg 18210, Level 16, State 1, Server <ServerName>, Line LineNumber

BackupVirtualDeviceSet::AllocateBuffer:  failure on backup device '6effc98c-5db7-470f-a5f9-468c6ce0736b'. Operating system error 995(The I/O operation has been aborted because of either a thread exit or an application request.).

Msg 3013, Level 16, State 1, Server <ServerName>, Line LineNumber

BACKUP DATABASE is terminating abnormally.


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


This issue is fixed in the following cumulative update 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:


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

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