Description of the security update for SharePoint Server 2019: September 8, 2020

Applies to: SharePoint Server 2019

Improvements and fixes

This security update contains improvements and fixes for the following nonsecurity issues in SharePoint Server 2019:

  • Reduces the time to stop application pools.
  • Fixes an issue in which restoring a Search service application that has Overwrite type from a full backup fails after the Search service application is deleted.
  • Fixes an issue in which the URL redirection occurs to the root instead of the actual resource when a user logs in to SharePoint by using multiple authentication types, such as a Security Assertion Markup Language (SAML) token and a FedAuth cookie, at the same time.
  • Fixes an issue in which multiple items are added to the list when you add a new item to a list and select Save multiple times on the Ribbon.
  • Fixes a memory leak issue that occurs when you export a site.
  • Fixes a potential memory leak.
  • Fixes an issue in which multiple columns or rows can't be copied from Excel tables to the list in Quick Edit view.
  • Fixes an issue in which the DocumentSharing.svc service is broken and users receive a "403 Access Denied" error message.
  • Fixes an issue that generates a high CPU cost when you call search API on an extended web application.
  • Fixes an issue in which the library setting that should force opening a document in Word is not honored in classic experience when you use browsers other than Internet Explorer or legacy Edge.
This security update also contains fixes for the following nonsecurity issues. To fix these issues completely, you have to install KB 4484504 together with this update.
  • Fixes an issue in which the "shared with other users" context menu in subfolders doesn't work in classic view.
  • Fixes an issue in which a file is uploaded to the wrong folder in classic view of OneDrive for Business.
  • Fixes an issue in which Reply Rich Text Editor (RTE) textbox fields are identified by JAWS as "unlabeled" in Discussion Board.
  • Fixes an issue in which images are identified as "undefined" by JAWS in Picture Library/Slides view.
  • Fixes an issue in which a list view cannot auto-refresh after you upload a new folder to it.
  • Fixes an issue in which a "Multiple Entries Matched" error occurs when you edit a ListItem that has a People column.
  • Fixes an issue in which the Modern documents page appear blank when a new user first logs on.
  • Fixes an issue in which the ellipses (...) menu to "Manage Access" appears only the second time that you select Share.
  • Fixes an issue in which the role of the Document control is incorrectly defined in Communication Site.
  • Fixes an issue in which renaming the page title through the document information panel (DIP) doesn't take effect in the Title region.
  • Fixes an issue in which the Shift+Tab keyboard shortcut to navigate the news sites list creates a keyboard trap.
  • Fixes an issue in which Suggestion in the Column filter pane of a document library web part isn't working in a subfolder.
  • Fixes an issue in which the List web part doesn't display the Hyperlink or Picture column correctly in a Modern team site.

Known issues in this update

  • Issue 1

    Users who install SharePoint in non-English languages or install non-English language packs can't work on some modern pages in non-English sites.


    To fix this issue, install KB 4461512.
  • Issue 2

    An error occurs when you try to access the "Result Sources," “Query Rules,” “Search Result Sources,” or “Search Query Rules” page from the Search Settings section of Site Settings


    To fix this issue, install KB 4486676.
  • Issue 3

    After you install this update, some SharePoint ghosted pages don't render, and will generate error messages.


    To resolve this issue, see KB 4584132.

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 8, 2020.

Security update replacement information

This security update replaces previously released security update 4484472.

File hash information

File name SHA1 hash SHA256 hash
sts2019-kb4484505-fullfile-x64-glb.exe 86C2F8F3B94DDEC2F5E1E289E3C6390912F43914 F833DE74BA13B4C906B6E1A9A0CBE99939444E61E003DEC586823CCF4511E388

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.

Information about protection and security

Protect yourself online: Windows Security support

Learn how we guard against cyber threats: Microsoft Security