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...

About


ABOUT ME:

With over 20 years of hands-on experience in IT infrastructure, Lasse Nordvik Wedø is a consulting director and a principal solutions architect at Innofactor Norge, a leading Nordic provider of digitalization and cloud solutions. He specializes in unified communications and collaboration, identity and access management, device management, and cybersecurity, helping customers migrate and adopt Microsoft cloud services securely and efficiently.

Lasse is also an M365 Apps & Services MVP, a prestigious recognition from Microsoft for his technical expertise and community contributions. He has received nine awards since 2015, and co-authored the book “Lync Server Cookbook” from Packt Publishing. He is an international speaker, a blogger, and a co-organizer of several events and communities related to Office 365 and Microsoft cloud technologies. He is passionate about sharing his knowledge and insights with peers and customers, and driving innovation and excellence in the IT industry.

Contributor to communities:
Co-organizer of MVP-Dagen: https://mvpdagen.no
Co-organizer of Norwegian Office 365 Community Meetup: https://www.meetup.com/NSC-Oslo/
Co-organizer of Bergen Microsoft Community: https://bergenmicrosoftcommunity.one/

Publications:
- Author of "Microsoft 365 Copilot: From Confusion to Clarity" on Amazon Kindle (2025)
 - Contributor to "Lync Server 2013 Cookbook" by Packt Publishing: (Dec 2014)
- Author of MVP Technical Tuesday article: "Automating the collection of CQM data"

Speaker:
- MS Ignite 2018: THR2039 Is voice in the cloud right for you?
- MS Ignite 2016: Configure Skype for Business Cloud Connector Edition with your SBC
- Trio brukerforum 2016: Skype for Business; Past, Present and Future
NIC 5th edition: Unified Communications – Unplugged
- MS Ignite 2014: Managing Backup and Restore in Skype for Business (coming soon)
- Breakfast seminar March 2014: Goodbye Lync, Hello Skype for Business
- Lyncday 2014: Lync 2013 backup and restore
- Teched 2014: Managing Microsoft Lync 2013 backup and restore

Awards:
- M365 Apps & Services MVP (July 2024)
- M365 Apps & Services MVP (July 2023)
- M365 Apps & Services MVP (July 2022)
- Office Apps and Services MVP (July 2021)
- Office Apps and Services MVP (July 2020)
- Office Apps and Services MVP (July 2019)
- Office Apps and Services MVP (July 2018)
- Office Servers and Services MVP (July 2017)
- Office Servers and Services MVP (April 2016)
- Skype for Business MVP (April 2015) - Renamed Office Servers and Services MVP
- Microsoft Community Contributor (2011)