July 2020 CU for Office Online Server is available for download

The product group released the July 2020 Cumulative Update for Office Online Server.

The KB article for July 2020 CU will be available at the following Location in a couple of hours:

  • KB 4484451 – July 2020 Update for Office Online Server

The download for July 2020 CU is available through the following link:

Related Links:

12 Comments


  1. hello Stefan,
    the documentation which reveals the windows system compatible with Office Online server was written in 2017 and at the moment we did not have Windows server 2019 yet so it is normal that the 2 are not compatible. so what about today knowing that Windows 2019 has been around since October 2018?

    Reply

    1. Hi Marie,
      I would recommend to open a support case for this to get an official statement from the product group on this.
      Cheers,
      Stefan

      Reply

  2. Hello Stefan,

    Is this CU applied to Office Online Server 2016?

    Thanks,

    Reply

    1. Hi Phu,
      there is no Office Online Server 2016 or 2019. Office Online Server is an evergreen product.

      If you are still using a build older than November 2018 then you need to uninstall it and install the November 2018 full install – all fixes since November 2018 only apply to the November 2018 full build of Office Online Server.
      Cheers,
      Stefan

      Reply

      1. Thanks for pointing out that the OOS is an evergreen product.

        Please pardon me but what do you mean by a “build older than November 2018”? If I were to set up a brand new OOS farm and used the ISO file downloaded from the Volume Licensing Center, and then apply the latest patches on top of it, would it then be considered a build older than November 2018?

        Thanks,
        Phu V. Huynh

        Reply

        1. Hi Phu,
          from the following page you can see that the last full release for Office Online Server was in November 2018 with version 16.0.10338.20039:
          https://docs.microsoft.com/en-us/officeonlineserver/office-online-server-release-schedule

          Fixes released after November 2018 only apply to the November 2018 release.
          Please check the version number of your Office Online server.
          If the build is below 16.0.10338.20039 you need to uninstall it and install the November 2018 release to be able to apply updates.

          Cheers,
          Stefan

          Reply

  3. Hello Stefan,

    Below is the output of the command Get-Content C:\ProgramData\Microsoft\OfficeWebApps\Data\local\OfficeVersion.inc:

    SERVER_COMPAT_RMJ = 1
    WSS_RMJ = 4
    RMJ = 16
    RMM = 0
    RUP = 10362
    RPR = 20000
    ISBUILDLABMACHINE = 0

    Looks like I am OK?

    Thanks,
    Phu V. Huynh

    Reply

    1. Hi Phu,
      yes, that looks correct.
      Cheers,
      Stefan

      Reply

  4. Hi we have Microsoft online server on windows server 2019 I applied the patches but no help I get so many SSL / TLS errors on office online server that connection can not establish any idea Stefan ?

    Reply

    1. In this case I would recommend to open a support ticket with Microsoft to get this investigated.

      Reply

      1. Thank you so much Stefan, I just installed a brand new windows server 2016 with office online 2019 server on it + the new KB / patch.
        Valid SSL and still i get a lots error .
        •:HeaIthMessage:• ExcelSeNicesWfeWatchdcg reported status for ExcelServicesWfe in category ‘WfeRedirect’. Reported status: Exception when checking /default.aspx: System.Net.WebExcepticn: The underlying connection was closed.could
        not establish trust relationshi for the SSUTLS secure channel. —& ‘S stem.Secuf .Authenticaticn.AuthenticaticnExce ion: The remote certificate is invalid according to the validation procedure at.system.security.SSiStatesend…….

        Reply

        1. Hi again for your info i removed the Remove-SPWOPIBinding from sharepoint and re created the SSL connection worked..
          thanks

          Reply

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