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...

LineURI still a part of the user after removal

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Ever been in my shoes;
About to enable a user for enterprise voice, but you're not allowed as the number is already in use?
Only problem is; You could swear the number isn't in use any more, as you removed a user with that number just a few days ago. With the exact same number.....

Well, here is something I discovered in a deployment at a customer site:
When you remove enterprise voice from a user, you do NOT remove the LineURI property from the user. So when you try to reuse the same number, it is still listed as in use.

You have to remove the assigned number prior to disabling the enterprise voice feature on a user, for it to truly be freed.

What was that? You don't remember which user you edited yesterday (or a few days ago)?
Here is quick tip. Launch powershell, and type the command: "Get-CsUser | ft -Property name, LineURI" This will give you a list off all of your CS users, and their corresponding phone numbers.

Just look for the number you are trying to add to another user, and identify to which user it already belongs to. Then move over to the control panel, locate the user, enable it for voice, remove the number, and disable the voice again...