Block the download of files from a SharePoint site or OneDrive (preview)
This feature is in preview and will require a Microsoft Syntex Advanced Management license when the feature becomes generally available (GA)
As a SharePoint Administrator or Global Administrator in Microsoft 365, you can block download of files from SharePoint sites or OneDrive. This feature does not need Azure Active Directory conditional access policies. This feature can be set for individual sites and cannot be set at the organization level.
Blocking download of files allows users to remain productive while addressing the risk of accidental data loss. Users have browser-only access with no ability to download, print, or sync files. They also won't be able to access content through apps, including the Microsoft Office desktop apps. When web access is limited, users will see this message at the top of sites, "Your organization doesn't allow you to download, print, or sync from this site. For help contact your It department."
How to set this policy for a SharePoint site
To use PowerShell: Download the latest SharePoint Online Management Shell.
If you installed a previous version of the SharePoint Online Management Shell, go to Add or remove programs and uninstall "SharePoint Online Management Shell."
Connect to SharePoint as a Global Administrator or SharePoint Administrator in Microsoft 365. To learn how, see Getting started with SharePoint Online Management Shell.
Run the following command.
Set-SPOSite -Identity <SiteURL> -BlockDownloadPolicy $true
Set-SPOSite -Identity https://contoso.sharepoint.com/sites/research -BlockDownloadPolicy $true
Exempting users and groups from the policy
The following parameters can be used with this cmdlet to fine-tune it.
-ExcludeBlockDownloadPolicySiteOwners $true Exempts site owners from this policy and they can fully download any content for the site.
-ExcludedBlockDownloadGroupIds <comma separated group ids> Exempts users from the mentioned groups from this policy and they can fully download any content for the site.
Blocking download may impact the user experience in some apps, including some Office apps. We recommend that you turn the policy on for some users and test the experience with the apps used in your organization. In Office, make sure to check the behavior in Power Apps and Power Automate when your policy is on.
Apps that run in "app-only" mode in the service, like antivirus apps and search crawlers, are exempted from the policy.
If you're using classic SharePoint site templates, site images may not render correctly. This is because the policy prevents the original image files from being downloaded to the browser.