September 2021 CU for SharePoint Server 2019 is available for download

The product group released the September 2021 Cumulative Update for SharePoint Server 2019 product family. SharePoint Server 2019 is patched with a language dependent and a language independent fix.

The KB article for September 2021 CU will be available at the following Location in a couple of hours:

  • KB 5002018 – September 2021 Update for SharePoint Server 2019 (language independent) – This is also a security update!
  • KB 5002019 – September 2021 Update for SharePoint Server 2019 (language dependent)

The download for September 2021 CU is available through the following link:

Important: It is required to install both fixes (language dependent and independent) to fully patch a SharePoint server. This applies also to servers which do not have language packs installed. The reason is that each SharePoint installation includes a language dependent component together with a language independent component. If additional language packs are added later (only) the language dependent fix has to be applied again.

It is irrelevant which language you pick on the drop down in download center. Even the language dependent fixes are all in the same package for all languages.

After installing the fixes you need to run the SharePoint 2019 Products Configuration Wizard on each machine in the farm. If you prefer to run the command line version psconfig.exe ensure to have a look here for the correct options.

Please ensure to have a look at the SharePoint Patching Best Practices before applying new fixes.

SharePoint 2019 September 2021 CU Build Number:

Language independent fix: 16.0.10378.20002
Language dependent fix: 16.0.10378.20002

Related Links:


  1. Hi Stefan,
    We were told there were two know issues in the August 2021 CU :
    – The “Edit Page” button is not visible anymore
    – News.aspx shows an error message.
    Are they fixed in this CU?


    1. Hi Sylvain,

      I haven’t heard about these issues and I just double checked and also haven’t found any fix requests related to these keywords.



      1. Thanks for your reply, Stefan. I’ll check with our DSE to see if he has more information about theses.


        1. Hello Sylvain, We saw the “Edit Page” button issue with the August CU, but only when the language dependent update was not also installed. The issue is windows update only offers the security related update, whereas you need to manually download the other, and then install and run the Products Configuration Wizard. Cheers


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