FIX: Error 17066 occurs during the encryption operation when you use TDE in SQL Server 2012

Applies to: SQL Server 2012 DeveloperSQL Server 2012 EnterpriseSQL Server 2012 Standard


Assume that you set a database to use transparent data encryption (TDE) in Microsoft SQL Server 2012. In a rare case, during the encryption operation, you receive the following error messages in the SQL Server error log:
Error: 17066, Severity: 16, State: 1.

SQL Server Assertion: File:< lckmgr.cpp>, line=9506 Failed Assertion = 'removedEntry != NULL'. This error may be timing-related. If the error persists after rerunning the statement, use DBCC CHECKDB to check the database for structural integrity, or restart the server to ensure in-memory data structures are not corrupted.

* Non-yielding Scheduler

Process 19:0:1 (0x12b4) Worker 0x00000000054DA160 appears to be non-yielding on Scheduler 31. Thread creation time: 13076246206261. Approx Thread CPU Used: kernel 0 ms, user 51402 ms. Process Utilization 31%. System Idle 66%. Interval: 70448 ms.
When this error occurs, you have to restart SQL Server.


Cumulative Update information

The issue was first fixed in the following cumulative update of SQL Server.


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