KB4563007 - FIX: VDI backup fails with error after applying SQL Server 2019 CU2/CU3/CU4

Applies to: SQL Server 2019 on Linux


After applying SQL Server 2019 Cumulative Update (CU) CU2/CU3/CU4, 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:
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