office online server Ribbon hidden

羽 陈 1 Reputation point

The internal server farm is deployed office online server,Excuse me office online logo and Can the ribbon be hidden
The purpose is to prohibit users from downloading materials

Microsoft Office Online Server
Microsoft Office Online Server
Microsoft on-premises server product that runs Office Online. Previously known as Office Web Apps Server.
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  1. Emi Zhang-MSFT 21,626 Reputation points Microsoft Vendor

    Hi @羽 陈 ,
    I suggest you refer to this support article about how to disable Download option:

    Note: Microsoft is providing this information as a convenience to you. The sites are not controlled by Microsoft. Microsoft cannot make any representations regarding the quality, safety, or suitability of any software or information found there. Please make sure that you completely understand the risk before retrieving any suggestions from the above link.

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  2. Trevor Seward 11,681 Reputation points

    You can't customize the ribbon. You will either need Azure RMS or Active Directory RMS to restrict the files in the Doc Lib.