Go to the Access control page of the new SharePoint admin center, and sign in with an account that has admin permissions for your organization.
Select Unmanaged devices(those not hybrid AD joined or compliant in Intune) to check if your tenant has selected Allow limited, web-only access on unmanaged devices:
If you select this option, users on unmanaged devices will have browser-only access with no ability to download, print, or sync files.
More information for your reference:
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