Topic Status: Some information in this topic is preview and subject to change in future releases. Preview information describes new features or changes to existing features in Microsoft SQL Server 2016 Community Technology Preview 2 (CTP2).
Perform the following tasks to alleviate the problem:
Locate the transaction that is holding the lock on the required resource, if possible. Use sys.dm_os_waiting_tasks and sys.dm_tran_locks dynamic management views.
If the transaction is still holding the lock, terminate that transaction if appropriate.
Execute the query again.
If this error occurs frequently change the lock time-out period or modify the offending transactions so that they hold the lock for less time.