Forum Discussion
Azure - External collaboration settings - Members can invite -- Impact on OneDrive sharing
The difference might stem from the fact that one of the tenants doesnt have the SPO B2B feature turned on. Without it, SPO/ODFB still use their own mechanism for sharing, effectively bypassing (most) B2B controls across M365. Some details on the difference in behavior can be found here: https://docs.microsoft.com/en-us/azure/active-directory/external-identities/o365-external-user
That said, I believe said feature should be rolled out to all tenants now, but perhaps in your case one is in a different "cloud". Otherwise, the "Members can invite" setting should be mandatory afaik.
The difference might stem from the fact that one of the tenants doesnt have the SPO B2B feature turned on. Without it, SPO/ODFB still use their own mechanism for sharing, effectively bypassing (most) B2B controls across M365. Some details on the difference in behavior can be found here: https://docs.microsoft.com/en-us/azure/active-directory/external-identities/o365-external-user
That said, I believe said feature should be rolled out to all tenants now, but perhaps in your case one is in a different "cloud". Otherwise, the "Members can invite" setting should be mandatory afaik.
VasilMichev Thank you Vasil, your guidance was spot on! EnableAzureADB2BIntegration was true for tenant A, and false for tenant B, so I'm almost sure that's the explanation.