This article describes update 4484175 for Microsoft Office Online Server that was released on December 10, 2019.
Known issues in this update
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After you install this security update, Office Online Server logging will be set to Verbose by default. We recommend that you change this setting to Medium by running the following command:
Set-OfficeWebAppsFarm -LogVerbosity “Medium”
Note After you run the command, you have to restart the Office Online Service. To do this, run the following command:
Restart-Service WACSM
Improvements and fixes
This update fixes the following issue:
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Web Parts on SharePoint Server 2016 are missing the top toolbar and have filter buttons on pivot charts not working correctly. This issue occurs when you use Microsoft Edge or Internet Explorer as a browser.
How to download and install the update
Download Center
This update is only available for manual download and installation from the Microsoft Download Center.
Virus-scan claim
Microsoft scanned this file for viruses by using the most current virus-detection software that was available on the date that the file was posted. The file is stored on security-enhanced servers that help prevent any unauthorized changes to it.
Update information
Prerequisites
To apply this update, you must have Microsoft Office Online Server installed.
Restart information
You don't have to restart the computer after you install this update.
File information
For the list of files that are included in the update 4484175, download the file information.
References
Learn about the standard terminology that is used to describe Microsoft software updates. The Office System TechCenter contains the latest administrative updates and strategic deployment resources for all versions of Office.
