Prevent users from installing the OneDrive sync app
The Sync button helps users install and set up the new OneDrive sync app. If you want to manage the rollout of the sync app to your organization, you can hide the Sync button on the OneDrive website to prevent your users from downloading the sync app themselves.
To prevent users from downloading the OneDrive sync app
Go to Settings in the new SharePoint admin center, and sign in with an account that has admin permissions for your organization.
If you have Office 365 operated by 21Vianet (China), sign in to the Microsoft 365 admin center, then browse to the SharePoint admin center and open the Sharing page.
Clear the Show the Sync button on the OneDrive website check box.
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