AI Studio loads normally, but creating even a trivial interaction containing only hi fails with “An internal error has occurred.”
DevTools shows the failing backend RPC is google.internal.alkali.applications.makersuite.v1.MakerSuiteService/CreateInteraction, HTTP 403. Response payload reports RPC status 7: The caller does not have permission.
I have reproduced this after completing age verification, phone verification and 2SV, with no VPN/proxy/private relay, in Chrome and Brave, on a second network, and with a second personal Google account.
Please investigate whether this is an AI Studio managed-agent/Interactions entitlement, regional-classification, Trust & Safety, project-access, or backend provisioning issue. I can provide account email, project ID, full timestamp and screenshots privately.