M365 Changelog: (Updated) Legacy SharePoint Invitation Manager is being retired

MC696169 – Updated January 24, 2024: Microsoft has added additional information regarding this change.

Microsoft is completing our retirement of the legacy SharePoint Invitation Manager for guests. This platform is currently used only when Document Libraries are shared externally or when an external user is shared to with a custom role. These flows will now use Entra B2B Invitation Manager instead.

When this will happen:

Targeted Release: Microsoft will begin rolling out early December 2023.

Standard Release: Microsoft will begin rolling out early January 2024 and conclude by late February 2024.

How this will affect your organization:

Microsoft completing our retirement of the legacy SharePoint Invitation Manager for guests. This platform is current used only when Document Libraries are shared externally or when an external user is shared to with a custom role. These flows will now use Entra B2B Invitation Manager instead. This means that these flows will now also respect any policies or settings in the Entra B2B admin center. 

What you need to do to prepare:

You may need to update your documentation for end users. You should also check your Entra B2B settings to ensure they are consistent with policies in the SharePoint Admin Center.