Hi @GregT8 ,
According to the article SharePoint and OneDrive integration with Azure AD B2B, guest accounts are automatically created when using sharing links in OneDrive, just like in SharePoint. The article states:
Once the integration is enabled you and your users don’t have to reshare or do any manual migration for guests previously shared with. Instead, when someone outside your organization clicks on a link that was created before Azure AD B2B integration was enabled, SharePoint will automatically create a B2B guest account. This guest account is created for the user who originally created the sharing link. (If the user who created the link is no longer in the organization or no longer has permission to share, the guest won’t be added to the directory and the file will need to be reshared.)
This implies that the same behavior applies to both SharePoint and OneDrive, since they are both part of the same integration. In your environment, since OneDrive sharing settings are set to "Anyone: users can share files and folders using links that don't require sign-in" and Azure AD external collaboration settings are set to "Anyone in the org can invite guest users including guest and non-admins", guest accounts should be created automatically when sharing links through OneDrive. However, there are some caveats and limitations that you should be aware of, such as:
- The guest account creation may take some time to complete after the link is clicked. You can check the status of the guest account in the Azure portal under Azure Active Directory > Users.
- The guest account creation may fail if the email address of the guest user is already associated with another account in your directory or another directory that you have a trust relationship with.
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