Forum Discussion
Issues with Sensitivity Labels and "Specific email addresses or domains" - Not working
Hello! We have enabled Sensitivity Labels in our tenant. The access control settings for the label states that a specific domain gets the permission "Co-Author". When we enable the Sensitivity lab...
Seems you are in the right track, please try below next step:
Double-check guest user provisioning
Even with B2B settings enabled, the user might still need to be explicitly invited or accepted as a guest in your tenant.
Review label encryption settings
In the Microsoft Purview portal, edit the label and confirm that the permissions are set to “Assign permissions now” and that the domain is correctly listed. Sometimes, using domain-based permissions can be finicky—try testing with a specific user email instead.
Office sign-in context: Make sure the external user is signed into Office with the same account that received the document. Office apps can cache credentials, and users might unknowingly be signed in with a different account.