FIX: Scheduler deadlock on primary replica when you remove a replica from an AlwaysOn availability group in SQL Server 2012 or SQL Server 2014

Gælder for: SQL Server 2012 EnterpriseSQL Server 2012 DeveloperSQL Server 2012 Standard

Symptoms


When you remove a replica from an AlwaysOn availability group, for example, by using the ALTER AVAILABILITY GROUP statement, as follows:

ALTER AVAILABILITY GROUP group_name REMOVE REPLICA ON 'instance_name' [,...n]


You may find "Deadlocked Schedulers" dump files in the error log on the primary replica.


Status


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