Description of the security update for Excel 2016: September 10, 2019

Applies to: Excel 2016


This security update resolves an information disclosure vulnerability that exists when Microsoft Excel incorrectly discloses the contents of its memory. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2019-1263 and Microsoft Common Vulnerabilities and Exposures CVE-2019-1297.

Note To apply this security update, you must have the release version of Excel 2016 installed on the computer.

Be aware that the update in the Microsoft Download Center applies to the Microsoft Installer (.msi)-based edition of Office 2016. It doesn't apply to the Office 2016 Click-to-Run editions, such as Microsoft Office 365 Home (see What version of Office am I using?).

Improvements and fixes

This security update contains fixes for the following nonsecurity issues:
  • When two or more workbooks are open, and at least one workbook contains a macro, the Excel Ribbon may be disabled when you select rows or columns.

  • You may sometimes experience a "0x800A03EC" error when you use a VBA macro to update Power Query data.

How to get and install the update

Method 1: Microsoft Update

This update is available from Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to get security updates automatically, see Windows Update: FAQ.

Method 2: Microsoft Update Catalog

To get the standalone package for this update, go to the Microsoft Update Catalog website.

Method 3: Microsoft Download Center

You can get the standalone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More information

Security update deployment information

For deployment information about this update, see security update deployment information: September 10, 2019.

Security update replacement information

This security update replaces previously released security update 4475513.

File hash information

File name SHA1 hash SHA256 hash
excel2016-kb4475579-fullfile-x86-glb.exe 6A88110D765C2013B0D1AA1D5998899E179301BE 71CEF2F18689EEC377B0CA4CE8F357B117DCA1F66EC9C750EB5189B85F4A9AA8
excel2016-kb4475579-fullfile-x64-glb.exe 6E133A95A962AD51972B55C2C930D045D9885CAA 09ACB0457735D7469860C91984AFB32A72FDBF8693819E1D72A8CC1E79FF29EA

File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following table. The dates and times for these files are listed in Coordinated Universal Time (UTC). The dates and times for these files on your local computer are displayed in your local time together with your current daylight saving time (DST) bias. Additionally, the dates and times may change when you perform certain operations on the files.

How to get help and support for this security update

Help for installing updates: Protect yourself online

Help for protecting your Windows-based computer from viruses and malware: Microsoft Security

Local support according to your country: International Support