FIX: Automatic failover and service outage occur on availability groups in SQL Server 2014

Applies to: SQL Server 2014 DeveloperSQL Server 2014 DeveloperSQL Server 2014 Enterprise More

Symptoms


You use the AlwaysOn availability groups feature in Microsoft SQL Server 2014. When a stalled dispatcher system dump occurs, an automatic failover might occur on the availability groups if the AlwaysOn feature is configured to do this. This failover is expected. However, the failover could cause a brief service outage.

Resolution


This problem was first fixed in the following cumulative update for SQL Server 2014:


Status


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

References


Learn about the terminology Microsoft uses to describe software updates.