Hi @Vinod Survase ,
As mentioned, to restrict download options for documents such as download a copy, download button in SharePoint Online, here are some options:
Option 1: Grant “Restricted View” Permission to Users
To disable the download option in SharePoint Online, you can grant the “Restricted View” permission level to either a particular user or group which allows only read but not download.
Option 2: Share a File with Block Download Option
Unlike sharing a site or document library, You can share a specific document with download option disabled. To share a file,
Select any office documents, Click on the Share button in the toolbar (or from the context menu)
In the Share Popup, Click on “People in <Your Domain> with the link” or “Specific People” Option. Uncheck “Allow Editing” and enable “Block Download” option.
Click on Apply, and enter your recipient name
SharePoint Online: How to Disable Download Option for Documents
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We currently provide technical support on SharePoint. If you want to seek help from Teams, Onedrive, Exchange, I would suggest you repost and add separate tags, then you will get more professional advice from the corresponding team.
Thanks for your support and understanding. :)
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