57327: Acronis Backup 11.7/11.5: Single-pass Backup Fails with "An invalid file has been detected"

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Symptoms

Single-pass backup of a machine with SQL instances fails with:

Error code: 54
Module: 482
LineInfo: 5c71ebf434f0c47a
Fields:  $module : disk_bundle_vs_43814
Message: Failed to collect all of the data required for single-pass backup of Microsoft SQL Server.
--------------------
Error code: 340
Module: 349
LineInfo: 929384f51e971cd1
Fields:  $module : ArsDbBackupProvider64_vsa64_43814
Message: Cannot resolve file path 'C:\Program Files\Microsoft SQL Server\MSSQL10_50.InstanceName\MSSQL\DATA\name.mdf'.
--------------------
Error code: 307
Module: 349
LineInfo: c50bc7fc06bf4854
Fields:  $module : ArsDbBackupProvider64_vsa64_43814
Message: Failed to resolve file path 'C:\Program Files\Microsoft SQL Server\MSSQL10_50.InstanceName\MSSQL\DATA\name.mdf'.
--------------------
Error code: 332
Module: 349
LineInfo: c50bc7fc06bf4899
Fields:  $module : ArsDbBackupProvider64_vsa64_43814
Message: Cannot open file 'name.mdf' in directory 'C:\Program Files\Microsoft SQL Server\MSSQL10_50.InstanceName\MSSQL\DATA\'.
--------------------
Error code: 304
Module: 349
LineInfo: c50bc7fc06bf4865
Fields:  $module : ArsDbBackupProvider64_vsa64_43814
Message: An invalid file has been detected.
--------------------
Error code: 17
Module: 4
LineInfo: f35f747b3b21fbe7
Fields:  $module : ArsDbBackupProvider64_vsa64_43814
Message: The specified file does not exist.

When you check VSS writers with vssadmin list writers command, SqlServerWriter is not listed among them.

Cause

Database name starts with a space.

Solution

Remove the space from the database name.

More information

See this Microsoft Support article.

Please contact Acronis Customer Central if this solution is not applicable in your case.

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