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

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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 Teams and an update on avatars

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The new Teams is rolling out in GA, and all users will start to see the "New Teams" toggle soon, if it's not already there. For now, users can choose to switch back and forth between the clients, but admins can control how this toggle behaves. With the "Teams Update Policy" it is possible to choose what the default mode should be, let Microsoft control when it shifts or disable the new client all together. I am guessing the old client will be disabled in the end, but here is the guide on how to control things for now.

Here is a heads-up on changes to Avatars in Teams. First of all, there will be a new license introduced to eligible users (MESH_AVATARS_FOR_TEAMS). This will be added to users with one of the following licenses: Teams Essentials, Microsoft 365 Business Basic, Microsoft 365 Business Standard, Microsoft 365 Business Premium, Microsoft 365 E3/E5, and Office 365 E1/E3/E5.
Also, please note that avatars will not be available to users not meeting the minimum hardware requirement of a CPU with 2 cores and 6GB ram. This is done to ensure the right experience.