September 2020 cumulative update 7.0.2046.244 for Skype for Business Server 2019 and Unified Communications Managed API 5.0 Runtime

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This cumulative update fixes issues in Skype for Business Server 2019 and Unified Communications Managed API 5.0 Runtime. The version number of this update is 7.0.2046.244.

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Issues that the cumulative update fixes

The cumulative update fixes the following issues:

KB 4510856 User can’t create Skype meeting for a delegator via Skype for Business on Mac if they’re homed in different pools in Skype for Business Server 2019
KB 4510852 UCWA client is disconnected because w3wp.exe crashes when you use clarity connect in Skype for Business Server 2019
KB 4537394 UCWA unhandled exception – InvalidDataException in Skype for Business Server 2019
KB 4512879 UCWA client can’t make a P2P call or join a conference when EnableExternalAccessCheck is True and EnableOutsideAccess is False in Skype for Business Server 2019
KB 4518679 Skype meeting disconnection because of missing session refresh in Skype for Business Server 2019
KB 4538701 Conference call dropped after 28 or 56 minutes joining from Cisco phone in Skype for Business Server 2019

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How to install the update

To install the cumulative update for Skype for Business Server 2019 and Unified Communications Managed API 5.0 Runtime, you must follow the steps that are described in Updates for Skype for Business Server 2019 (KB4470124) on computers that are running the following server roles:

Skype for Business Server 2019, Standard Edition server
Skype for Business Server 2019, Enterprise Edition - Front End server and Back End server
Skype for Business Server 2019, Edge server
Skype for Business Server 2019, Standalone Mediation server
Skype for Business Server 2019, Director server
Skype for Business Server 2019, Persistent Chat server
Skype for Business Server 2019, Video Interop server

Note The Cumulative Server Update Installer applies all updates for the appropriate server role in one operation.

Prerequisites

There are no prerequisites for installing this cumulative update.

Registry information

To use one of the cumulative updates in this package, you don't have to make any changes to the registry.

Restart requirement

You may have to restart the computer after you apply this cumulative update.

Update replacement information

This cumulative update replaces the December 2019 cumulative update 7.0.2046.151 for Skype for Business Server 2019 and Unified Communications Managed API 5.0 Runtime.

Removal information

To remove this cumulative update package, use the Add or Remove Programs item in Control Panel.

Sometimes, when you try to uninstall this cumulative update, you are prompted for the source CD. If this behavior occurs, insert the source CD, or provide the path where the source files can be found.

File information

The global version of this cumulative update uses a Microsoft Windows Installer package to install the cumulative update. The dates and the times for these files are listed in Coordinated Universal Time (UTC) in the following table. When you view the file information, the date is converted to local time. To find the difference between UTC and local time, use the Time Zone tab in the Date and Time item in Control Panel.

After the update is installed, the global version of this update has the file attributes, or a later version of the file attributes, that are listed in the following table.

File name	File version	File size	Date	Time	Platform
File_default_tmx	Not Applicable	899,648	13-Sep-2020	05:17	Not Applicable
File_gac_collaboration_dll	7.0.2046.244	7,109,496	13-Sep-2020	04:50	x86
File_gac_sipeps_dll	7.0.2046.244	2,708,856	13-Sep-2020	04:47	x64
File_ocstracer_exe	7.0.2046.123	884,088	28-Jun-2019	17:51	x64
File_s4perf_dll	7.0.2046.123	53,112	28-Jun-2019	17:48	x64