Microsoft Blocks Graph Access to Non-IPM Folders

An app written to fetch details of Copilot interactions from the TeamsMessagesData folder suddenly stopped working when the Graph refused to return items. The 403 forbidden error can’t be argued with. Fortunately, the aiInteractionHistory API fills the gap, even if the API does not return the full text of Copilot responses. That information is available, but you’ll need to use eDiscovery to get it.

https://office365itpros.com/2026/06/18/copilot-interaction-app/