Updates for SharePoint Server 2019 (September 2019 CU)

A new cumulative update has been released for SharePoint Server 2019 (September 2019 CU).

SP Build:
16.0.10350.20000 (Language independent CU)
16.0.10350.20000 (Language dependent CU)

SharePoint 2019 CU – KB articles describing the CU:

  • KB 4475596 – September 2019 Update for SharePoint Server 2019 (language independent)
  • KB 4464557 – September 2019 Update for SharePoint Server 2019 (language dependent)
  • This CU does not include an update for Office Online Server

SharePoint Server 2019 CU – CU download link:

After installation, remember to run the SharePoint 2019 configuration wizard (SharePoint 2019 Products Configuration Wizard), or the following command:
PSConfig.exe -cmd upgrade -inplace b2b -wait -cmd applicationcontent -install -cmd installfeatures -cmd secureresources -cmd services -install

Important

Always install both packages in this order:

  1. language independent (updates language-independent components)
  2. language dependent (updates language-dependent components)

For language-dependent packages (language dependent), it does not matter which language you select, because each package contains updates for all languages.

If you install a new language pack on a SharePoint Server 2019 farm, you must subsequently reinstall the language-dependent package (language dependent).

Remember that, in addition to SharePoint, the Distributed Cache service must also be updated; see How to update Distributed Cache correctly and, for Office Online Server, you must have the current RTM version; see  How to update Office Online Server.

Included fixes and improvements

The list of fixes and improvements in this CU consists of excerpts from official Microsoft KB articles in their original language (EN).

SharePoint Server 2019

This security update resolves a remote code execution vulnerability that exists in Microsoft SharePoint if the software does not check the source markup of an application package. To learn more about this vulnerability, see the following CVE descriptions:

This security update resolves an elevation of privilege vulnerability that exists in Microsoft SharePoint. To learn more about the vulnerability, see Microsoft Common Vulnerabilities and Exposures CVE-2019-1260.

This security update contains improvements and fixes for the following nonsecurity issues:

  • When file paths on file shares are longer than the default Windows supported path length (260 characters), files are crawled without access control list (ACL) information.
  • Installing a SharePoint Server 2019 solution on a multi-server farm is an unreliable process and will not necessartily succeed.
  • When you attach a content database from a previous version of SharePoint Server to SharePoint Server 2019, existing “Table of Contents” web parts in that database would always have the “Show content from starting location” setting enabled after the upgrade. This update fixes this issue by preserving the original setting during upgrade.
  • Through the client-side object model (CSOM), the TaskLink ProjUid property for an external task returns the ID of its own project instead of the ID of the project that the task refers to. This update adds the ExternalProjectUid and ExternalTaskUid properties to the Task class to fix this issue.
  • Loading a timesheet is very slow and may take one minute or more.
  • Project Server Interface (PSI) API calls that require the permission of a farm administrator fail for users who are farm administrators but not server administrators.


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