Office 365 now offers an option to allow access to SharePoint Online site from only specific IP addresses.

To allow access to your SharePoint Online sites from specific IP address locations:

  • Sign in to your Office 365 administration center
  • Go to the SharePoint administration center
  • On the left navigation bar click on Device Access
  • Specify the IP addresses that you want to allow

Important: Make sure you enter your external (internet IP address). If you enter the wrong IP address you will not have access to all SharePoint Online sites including the SharePoint Administration center. In this case, you will need to open a ticket with the Office 365 support team to remove the restriction for you.

If you try to access a SharePoint Online site from an IP address that is not in the allow list, you will receive this message:

access-restricted

Note: At the time of writing this article, in order to allow access to SharePoint Online from only specific IP addresses, you might have to activate first release

See this article to activate first release: https://tremblayse.wordpress.com/2017/02/09/office-365-first-release/

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