KB4294694 - FIX: Access violation when you try to access a table when page compression is enabled on the table in SQL Server

Applies To

SQL Server 2014 Developer - duplicate (do not use) SQL Server 2014 Enterprise - duplicate (do not use) SQL Server 2014 Enterprise Core - duplicate (do not use) SQL Server 2014 Standard - duplicate (do not use) SQL Server 2017 Developer on Windows SQL Server 2017 Enterprise on Windows SQL Server 2017 Enterprise Core on Windows SQL Server 2017 Standard on Windows SQL Server 2016 Service Pack 1 SQL Server 2016 Developer - duplicate (do not use) SQL Server 2016 Enterprise - duplicate (do not use) SQL Server 2016 Enterprise Core - duplicate (do not use) SQL Server 2016 Standard - duplicate (do not use)

Symptoms

Assume that you have page compression enabled on some tables in Microsoft SQL Server. When you try to access one of the tables, an access violation occurs.

Resolution

This problem is fixed in the following updates for SQL Server:

Cumulative Update 11 for SQL Server 2017

Cumulative Update 4 for SQL Server 2016 SP2

Cumulative Update 12 for SQL Server 2016 SP1

Cumulative Update 12 for SQL Server 2014 Service Pack 2

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

Latest cumulative update for SQL Server 2017

Latest cumulative update for SQL Server 2016

The latest cumulative updates for SQL Server 2014

Workaround

To work around this problem, disable page compression on tables.

Status

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

References

Learn about the terminology Microsoft uses to describe software updates.