External Sharing in SharePoint and OneDrive is changing: What You Need to Know

In an ongoing effort to create a more secure environment by default, Microsoft is introducing an important security update that will affect how external users access content shared through SharePoint and OneDrive. Starting July 1, 2025, any links shared with external users before your organization enabled Microsoft Entra B2B integration will no longer work. This change applies to all organizations that have already enabled or will enable SharePoint and OneDrive integration with Microsoft Entra B2B (Most organizations I have looked into so far). External users trying to use old links will see an error message saying the organization has updated its guest access settings. To regain access, the content must be reshared. Highlights of how the change affects organizations who have enabled B2B: All external sharing will require guest registration. External users must be added as guests in your Microsoft Entra directory. Access will be managed through Microsoft Entra B2B Invitation Manager. T...

The new Yammer in Teams has landed

The new Yammer app has landed in Teams for most tenants. Using this app Teams allows users to easily access Yammer and it's community discussions. The new app in Teams is based upon the new Yammer look, where you get a lot of the new features announced at Ignite 2019. The app can be added by admins through policies, or users may add them directly themselves.

If you have not deployed Yammer to your organization, you might want to tell users not to use this app, or hide it from the store.

To access the new app, just click the app icon at the bottom of the left rail, search for "Yammer" and the application called "Communities"

Users may discover that the app does not allow you to switch networks (yet), and they will have to switch to a browser version to do so.