Office 365 Groups: Default Sharing Settings Relaxed

Office365GroupsWhen Office 365 Groups first shipped sharing with External Users was disabled.  Over time that default policy was changed to allow sharing with External Users who were already in your Azure AD.  In other words you could share with External Users IF you had already shared something else in your environment with that External User.  Based on user feedback this default sharing policy is being further relaxed to allow sharing with any Authenticated External User.  Anonymous Guest links will still not be allowed.

This change will apply to all Office Group sites that are created in the future, but will not apply to existing Office Group sites.  To apply the new default to existing Office Group sites use the following PowerShell:

Set-SPOSite -Identity https://tenant.sharepoint.com/sites/groupsite `
     -SharingCapability ExternalUserSharingOnly

You can also revert new Office Group sites back to the more restrictive setting using the following PowerShell:

Set-SPOSite -Identity https://tenant.sharepoint.com/sites/groupsite `
     -SharingCapability ExistingExternalUserSharingOnly

This change will loosen the security settings in Office 365 somewhat, but should also make the experience more predictable since it matches the setting in most other sites that allow External Sharing.  So as long as you are aware of the change it should be a good move.

Published by

Paul Papanek Stork

I am a SharePoint MVP who has specialized in Microsoft products since the mid-1990s. As a "Jack of all Trades" I have developed expertise as a network administrator, developer, and DBA. I works as a consultant/trainer where my breadth of knowledge makes me ideally suited to combine Administrative, Development, and SharePoint Designer topics. My 20+ years of experience and broad background make me a much sought after resource for SharePoint questions that cross traditional boundaries. I was a contributing author to the Developer's Guide to Windows SharePoint Services v3 Platform and the SharePoint Server 2007 Deployment Best Practices. My most recent book, the MCTS Windows SharePoint Services 3.0 Configuration Study Guide: Exam 70-631, was released in October, 2009.

One thought on “Office 365 Groups: Default Sharing Settings Relaxed”

  1. Hi Paul,

    Read your post but don’t really have the background to understand the significance. Is the sharing at a sharepoint level?

    Thanks,

    Art

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