Overview
- OpenAI began rolling out Lockdown Mode, which launched on June 6, 2026, to logged-in users across Free, Go, Plus, Pro and self-serve ChatGPT Business plans so anyone with an account can enable it.
- When enabled, Lockdown Mode blocks most outbound network requests and disables features that reach the web or external services, including live web browsing beyond cached content, image retrieval/display, Deep Research, Agent Mode, Canvas networking, and file downloads.
- OpenAI says the mode is optional and designed for higher-risk workflows; it does not stop prompt injection content from appearing inside processed files or web pages and cannot be used at the same time as Developer Mode.
- The rollout also adds an active session manager that shows devices and browsers signed into an account and lets users remotely log out of single or all sessions if they suspect unauthorized access.
- OpenAI frames Lockdown Mode as a targeted risk-reduction tool rather than a full fix, so organisations should pair it with admin controls, app restrictions and operational policies to better protect sensitive data.