04/28/2026
Most organizations don’t realize their SharePoint external sharing is about to break until it does.
Microsoft is rolling out a major change in 2026 that replaces simple OTP (one-time passcode) sharing with full Microsoft Entra B2B integration.
At first glance, it sounds like a security upgrade. And it is.
But here’s the real risk: existing sharing links and access methods may stop working if you’re not prepared.
That means:
• External users could suddenly lose access
• Clients and vendors hit “Access Denied”
• IT teams deal with a surge of support issues
We’ve already seen environments where external collaboration relied heavily on legacy sharing and transitioning without preparation caused disruption fast.
The shift to Entra B2B means every external user becomes a managed identity. Stronger security, yes but also more dependency on proper configuration, policies, and governance.
Big reminder: external sharing isn’t just a setting anymore its identity driven. And if your environment isn’t aligned, things will break.
Full breakdown here:
https://windowsmanagementexperts.com/microsoft-entra-b2b-external-sharing-sharepoint-changes-2026/