FIX: Cannot remove backup file after you restore the database from Windows Azure in SQL Server 2014 or SQL Server 2012

Symptoms
Assume that you use the RESTORE HEADERONLY or RESTORE FILELISTONLY command to restore a database from Windows Azure Blob storage service in Microsoft SQL Server 2014 or SQL Server 2012. After the command is completed, you cannot remove the backup file.
Cause
The issue occurs because there is an infinite lease on the backup file. Some race conditions between internal threads cause the lease to be not released in some cases.
Resolution
The issue was first fixed in the following cumulative update of SQL Server.

Cumulative Update 1 for SQL Server 2014 SP1

Cumulative Update 16 for SQL Server 2012 SP1

Cumulative Update 4 for SQL Server 2012 SP2

Cumulative Update 5 for SQL Server 2014

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

Article ID: 2970136 - Last Review: 06/22/2015 15:02:00 - Revision: 6.0

Microsoft SQL Server 2014 Developer, Microsoft SQL Server 2014 Enterprise, Microsoft SQL Server 2014 Standard, Microsoft SQL Server 2012 Service Pack 2, Microsoft SQL Server 2012 Service Pack 1, Microsoft SQL Server 2014 Service Pack 1

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