Microsoft distributes Microsoft SQL Server 2012 fixes in one downloadable file. Because the fixes are cumulative, each new release contains all the hotfixes and all the security updates that were included with the previous SQL Server 2012 update release.
When a SQL Server 2012 database contains a large transaction log file, you cannot restore the database in the Microsoft Azure binary large objects (BLOB) storage service. For example, if the transaction log file is so large that it takes longer than 3 minutes to restore it, you cannot restore the database.
Cumulative update information
Cumulative update package 5 for SQL Server 2012 Service Pack 1 (SP1)
The fix for this issue was first released in Cumulative Update 5. For more information about how to obtain this cumulative update package for SQL Server 2012, click the following article number to view the article in the Microsoft Knowledge Base:
Cumulative update package 5 for SQL Server 2012
Because the builds are cumulative, each new fix release contains all the hotfixes and all the security fixes that were included with the previous SQL Server 2012 fix release. We recommend that you consider applying the most recent fix release that contains this hotfix. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
The SQL Server 2012 builds that were released after SQL Server 2012 Service Pack 1 was released
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.