OneDrive Sync Now Supports ONLY NTFS

OneDriveNextGenSyncAn update to the OneDrive Next Gen Sync client that rolled out beginning in early January has limited where you can place the sync folder for your OneDrive files.  The target is now required to be a New Technology File System (NTFS) formatted drive.  When commenting on this Microsoft says that non-NTFS drives have never been supported, but that the client didn’t check in the past.  The change, according to Microsoft, is just tightening up the error checking in the OneDrive client and not implementation of a new feature.  According to Microsoft that’s why the change was released with no notice. It should be noted that OneDrive system requirements don’t list the NTFS limitation.  Resilient File System (REFS), Microsoft’s newest formatting, is also not supported.  User’s should plan to update the format of their drives to NTFS if they plan to use the OneDrive Next Gen Sync client.

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.