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 Backup Skype for Business script is now live

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As promised in today's session, here is the announcement of the general availability of the backup script for Skype for Business on premise.

It is continuation of the backup-lync2013 script, with a few minor tweaks to make it work with SfB.
But as I was going through the script to make it compatible, I also added a couple of other tweaks.

Here are the highlight of this version (called v 4.00)

  • Change: Script renamed to Backup-SfB.ps1
  • Change: Script edited to work with Skype For Bisiness server deployment (TAP Bits)
  • Change: Shortened filepath by using hostnames, not fqdn for naming
  • Change: New destination = c:\ucbackup
  • New feature: Added a switch to set a password for certificate $CertPass
  • New feature: Certificate export will now add "usages" for the exported certificates
  • New feature: A warning is displayed if a cert is not exportable
  • FEATURE REQUEST: Send an email notification on completion
  • Bugfix: If the same certificate is used for multiple usages, the next export (with an existing thumbprint) is skipped, only the first usage is displayed

I hope you find this useful, and I do appreciate feedback so I can make it even better in an upcoming event.

The script can be downloaded from the Technet Gallery