Update for SharePoint Server 2016 (July 2021 CU)

A new cumulative update for SharePoint Server 2016 has been released (July 2021 CU).
This CU includes both Feature Pack 2, which has been included since the September CU (September 2017 CU), and the previous Feature Pack 1.

SP Build:
16.0.5188.1000 (Language independent CU)
16.0.5188.1000 (Language dependent CU)

SharePoint 2016 CU – KB articles describing the CU:

• KB 5001976 – July 2021 Update for SharePoint Server 2016 (language independent)
• KB 5001981 – July 2021 Update for SharePoint Server 2016 (language dependent)

SharePoint Server 2016 CU – CU download link:

• Download July 2021 Update for SharePoint Server 2016 (language independent)
• Download July 2021 Update for SharePoint Server 2016 (language dependent)

After installation, remember to run the SharePoint 2016 Products Configuration Wizard (SharePoint 2016 Products Configuration Wizard), or the following command:

PSConfig.exe -cmd upgrade -inplace b2b -wait -cmd applicationcontent -install -cmd installfeatures -cmd secureresources -cmd services -install

Notice

Feature Pack 2 also includes all functionality from Feature Pack 1.

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, it does not matter which language you select, as each package contains updates for all languages.

If you install a new language pack on your SharePoint Server 2016 farm, you must then reinstall the language-dependent update package.

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

Included fixes and improvements

The fixes and improvements listed for this CU are excerpts from official Microsoft KB articles in their original language (EN).

SharePoint Server 2016

This security update resolves a Microsoft SharePoint Server spoofing vulnerability, SharePoint Server information disclosure vulnerability, and SharePoint Server remote code execution vulnerability. To learn more about the vulnerabilities, see the following security advisories:

• Microsoft Common Vulnerabilities and Exposures CVE-2021-34517

• Microsoft Common Vulnerabilities and Exposures CVE-2021-34519

• Microsoft Common Vulnerabilities and Exposures CVE-2021-34520

• Microsoft Common Vulnerabilities and Exposures CVE-2021-34467

• Microsoft Common Vulnerabilities and Exposures CVE-2021-34468

This security update contains fixes for the following nonsecurity issues in SharePoint Server 2016:

• Fixes an issue in which PSConfig doesn’t start an administrative instance of Microsoft Edge when you try to use SharePoint Server Central Administration.

• Fixes an issue in which you can’t resolve Portal Super User and Portal Super Reader accounts in a multi-tenant farm.

• Fixes an issue in which you can’t open the XSL and Parameters editor in Microsoft Edge that’s based on Chromium.

• Fixes an issue in which SharePoint Designer doesn’t create a forms page under a subsite.

• Fixes an issue in which the Site Aggregator Web Part doesn’t add a new tab as expected.

This security update also contains fixes for the following nonsecurity issues in SharePoint Server 2016. To fix the issues completely, you have to install KB 5001981 together with this update.

• Adds the ability to change the ASP.NET view state decryption and validation keys of a SharePoint Server web application. The Set-SPMachineKey PowerShell cmdlet configures and deploys new decryption and validation keys to the servers in the farm. The Update-SPMachineKey PowerShell cmdlet deploys decryption and validation keys to the servers in the farm.

• Fixes an issue that affects the bypass list functionality in the search crawler proxy settings by adding Windows-style wildcard support to the bypass list.

This security update also contains fixes for the following nonsecurity issues in Project Server 2016:

• Fixes an issue in which submitted status updates don’t appear for approval after you submit a timesheet.

• In the Scheduled Web Part, the Paste button doesn’t paste the cut or copied task to the grid. Paste by using the keyboard (Ctrl+V) does work as expected. However, cut by using the keyboard (Ctrl+X) doesn’t work. Ctrl+X copies the task instead of cutting it.