Consider the following scenario:
You're using Microsoft SQL Server 2014.
You run a SQL Server Backup job for database files that are stored directly in Azure Storage.
A network failure occurs.
In this scenario, the backup fails and generates error 3203.
Cumulative update information
The issue was first fixed in the following cumulative update of SQL Server 2014:
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server 2014:
To resolve this issue, install the hotfix from KB 3130999.
Registry informationYou don't have to make any changes to the registry to apply this the hotfix.
Restart requirementYou may have to restart the computer after you apply this hotfix.
Hotfix replacement information This hotfix doesn't replace a previously released hotfix.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.