Description of the security update for Skype for Business 2016: November 13, 2018

Applies to: Skype for Business 2016


A denial of service vulnerability exists in Skype for Business. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2018-8546.
Note To apply this security update, you must have the release version of Skype for Business 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 Determining your Office version).

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 stand-alone package for this update, go to the Microsoft Update Catalog website.
Method 3: Microsoft Download Center
You can get the stand-alone update package through the Microsoft Download Center. Follow the installation instructions on the download page to install the update.

More Information


To apply this update, you must have October 2, 2018, update for Office 2016 (KB4011669) installed.

Security update deployment information

For deployment information about this update, see security update deployment information: November 13, 2018.

Security update replacement information

This security update replaces previously released security update KB 4022221.

File hash information
File name SHA1 hash SHA256 hash
lync2016-kb4461473-fullfile-x86-glb.exe DAF1406DA994421DFD10C326A5BC0A18E52CBD78 DBA1ED0363D660D3D407449FD22F79FFBA4575F04A16EA9EA99113C890A70B34
lync2016-kb4461473-fullfile-x64-glb.exe 26778494984895C333FEA2D7ECDD4D3FBA51F420 E6E5C4D252FB2AC42B1CCAC663C16CE5C8F2272B4F08D81B3E155D1BFAA2E2BB
File information

The English (United States) version of this software update installs files that have the attributes that are listed in the following tables. 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

Protect yourself online and at home: Windows Security support
Help for protecting your Windows-based computer from viruses and malware: Microsoft Secure
Local support according to your country: International Support