KB4078055 - FIX: AG failover occurs after a latch time-out when you use SQL Server 2014

Work anywhere from any device with Microsoft 365

Upgrade to Microsoft 365 to work anywhere with the latest features and updates.

Upgrade now


Assume that you use AlwaysOn availability group (AG) in Microsoft SQL Server 2014. After a latch time-out, an access violation occurs on the primary replica, and then an AG failover occurs.


This fix is included in the following cumulative update for SQL Server:

Cumulative Update 11 for SQL Server 2014 SP2

About SQL Server builds

Each new build for SQL Server 2016 contains all the hotfixes and security fixes that were in the previous build. We recommend that you install the latest cumulative updates for SQL Server:

Latest cumulative update for SQL Server 2014


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


Learn about the terminology Microsoft uses to describe software updates.

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.