September 2023 CU for SharePoint Server 2019 is available for download

The product group released the September 2023 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 2023 CU will be available at the following Location in a couple of hours:

  • KB 5002472 – September 2023 Update for SharePoint Server 2019 (language independent)
    This is also a security update!
  • KB 5002471 – September 2023 Update for SharePoint Server 2019 (language dependent)

The downloads for September 2023 CU are available through the following links:

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 2023 CU Build Number:

Language independent fix: 16.0.10402.20016
Language independent fix: 16.0.10402.20016

Related Links:

6 Comments


  1. Hi Stefan,
    After installed the September 2023 CU for SharePoint Server 2019, we are getting an error on custom user control. The error is “The control type ‘System.Web.UI.WebControls.TemplateField’ is not allowed on this page.”

    Reply

    1. Hi Rama, which event id does this line have in the ULS log?

      Reply

  2. We’re getting similar error: System.Web.UI.WebControls.SiteMapPath.
    It was related to custom MasterPage. Sites were inaccessible, so it was reverted to OOTB masterpage. EventID on ULS is “tkau”. System.web.httpexception: The Control type ‘system.web.ui.webcontrols.sitemappath’ is not allowed on this page.

    Reply

    1. Thanks Samir!
      I would recommend to open a support case with Microsoft to get this analyzed in more details.
      Cheers,
      Stefan

      Reply

  3. Greetings, Stefan. Is there any knowledge of an issue with the “Items That Need Attention” view in the Modern UI that is causing “Something went wrong, Please Try Again or Refresh the page” messages? This all started for us after the August 2023 update. Thanks in advance for your response.

    Reply

    1. Hi Daniel,
      I haven’t heard about such an issue.
      If you need assistance for this issue, please open a ticket with Microsoft Support to get this investigated.
      Cheers,
      Stefan

      Reply

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