May 2023 CU for Office Online Server is available for download

The product group released the May 2023 Cumulative Update for Office Online Server.

The KB article for May 2023 CU will be available at the following Location in a couple of hours:

  • KB 5002372 – May 2023 Update for Office Online Server

The download for May 2023 CU is available through the following link:

Related Links:


  1. Hi Stefan,

    after the Installation of CU Update of May for Office Online Server and SharePoint 2019 we have a problem with open an Word Documents.
    If u open the Word Document with 3 Points works fine. But if u open the Word Documents directly, the editor doesn’t work.

    I need an advice please

    Best Regards


  2. Hi Stefan

    After installing the May 2023 CU for Office Online in our SPSE environment we are unable to open Excel files and Power Point files in browser. The page keeps showing the loading message but the file never gets loaded. Do you know of resolution to this problem.



    1. Hi Sriram,
      sorry without more information it is not possible to answer this question. Please open a ticket with Microsoft Support if you need assistance.


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