Enable third-party storage in Office 365

You can enable third-party storage for your users in Office 365 so they can store and share documents using services like Dropbox in addition to OneDrive for Business and team sites. This can be a great way to provide services that your users may already be using or prefer to use for business projects. If you don't want people in your organization using Office Online to open files in a third-party service, follow these steps to turn it off.

Important: Third party storage is enabled by default so you need to perform these steps right away if you don't want it available to your users.

To enable or disable third-party storage services

  1. Sign in to Office 365 with your work or school account.

  2. Go to the Office 365 admin center.

  3. Go to Settings > Services and add-ins > Office Online (in the old admin center, Service Settings > Office Online).

  4. Select Allow people to use third-party hosted storage services to turn this setting on or off.

Learn more

To learn more about Office Online and third-party services like Dropbox in the article Add Dropbox to Office Online.

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