Cumulative Update 12 for SQL Server 2014 SP2

This article describes Cumulative Update package 12 (CU12) (build number: 12.0.5589.7) for Microsoft SQL Server 2014 Service Pack 2 (SP2). This update contains fixes that were released after the initial release of SQL Server 2014 SP2.

Cumulative update

Cumulative updates (CU) are now available at the Microsoft Download Center.

Only the most recent CU that was released for SQL Server 2014 SP2 is available at the Download Center.

Each new CU contains all the fixes that were included with the previous CU for the installed version/Service Pack of SQL Server.
Microsoft recommends ongoing, proactive installation of CUs as they become available:
- SQL Server CUs are certified to the same levels as Service Packs, and should be installed at the same level of confidence.
- Historical data shows that a significant number of support cases involve an issue that has already been addressed in a released CU.
- CUs may contain added value over and above hotfixes. This includes supportability, manageability, and reliability updates.
Just as for SQL Server service packs, we recommend that you test CUs before you deploy them to production environments.
We recommend that you upgrade your SQL Server installation to the latest SQL Server 2014 service pack.

How to obtain this cumulative update package

The following update is available from the Microsoft Download Center:

Download the latest cumulative update package for SQL Server 2014 SP2 now.

If the download page does not appear, contact Microsoft Customer Service and Support to obtain the cumulative update package.

Note After future cumulative updates are released for SQL Server 2014, this and all previous CUs can be located and downloaded from the Microsoft Windows Update Catalog. However, Microsoft recommends that you always install the latest cumulative update available.

Hotfixes that are included in this cumulative update package

VSTS bug number	KB article number	Description	Fix area
11682702	4094893	FIX: Database can't be dropped after its storage is disconnected and reconnected in SQL Server	SQL Engine
11634178	4132896	Transaction Log "full" even when there is sufficient space available and Autogrowth is enabled in SQL Server	SQL Engine
11296778	4057307	FIX: Multidimensional mode randomly crashes and an access violation occurs in SSAS 2016 or in SSAS 2014	Analysis Services
11824715	4133191	FIX: A memory leak occurs in sqlwepxxx.dll causes the WmiPrvSe.exe process to crash	SQL Engine
11620771	4019799	FIX: Deadlock when run the "CleanOrphanedPolicies" and "DeleteDataSources" built-in stored procedures together in SSRS 2016	Reporting Services
11714673	4094706	FIX: Worker thread hangs after another thread is aborted when running a parallel query in SQL Server	SQL Engine
11591371	4091245	FIX: Access violation occurs when you query a table with an integer column in SQL Server 2017 and SQL Server 2016	SQL performance
11816663	3173472	SECURITY_CRYPTO_CONTEXT_MUTEX waits cause SQL Server 2016 to stop responding to client requests in SQL Server 2014 and 2016	SQL Engine
11832700	4131251	FIX: Thai characters in SSAS for SQL Server exported to a PDF file are displayed incorrectly	Reporting Services
11839435	4294694	FIX: Access violation when you try to access a table when page compression is enabled on the table in SQL Server	SQL Engine
11887074	4135113	FIX: Change tracking record is inconsistent during an update on a table that has a clustered or unique index in SQL Server	SQL Engine
11967440	4230730	FIX: A dead latch condition occurs when you run an online index rebuild or a merge command in SQL Server	SQL Engine
11922730	4316858	FIX: "Corrupted index" message and server disconnection when an update statistics query uses hash aggregate on SQL Server	SQL performance
12055727	4293839	FIX: TDE database goes offline during log flush if you lose connection to the EKM provider in SQL Server	SQL security
12104566	4338204	FIX: Circular dependency between column names for a calculated table that summarizes the partition query dataset in SQL Server	Analysis Services
12118405	4058175	FIX: TDE-enabled backup and restore are slow if the encryption key is stored in an EKM provider in SQL Server	SQL Engine

Notes for this update

Hybrid environments deployment

When you deploy an update to a hybrid environment (such as AlwaysOn, replication, cluster, and mirroring), we recommend that you refer to the following articles before you deploy the update: