Seeing “Network error” in ChatGPT, messages failing to send, or chat history not loading usually isn’t caused by just one issue. Below is a priority-based troubleshooting flow: confirm service status and your network first, then check your browser environment, and finally narrow it down to account and session issues.
Check service status and your network first: the fastest first step
Before anything else, open status.openai.com to see whether there’s a widespread outage. If the server side is unstable, no amount of local tweaking will stay reliable. Next, try a different network: switch from Wi‑Fi to a mobile hotspot (or the other way around), and watch whether the same issue disappears immediately.
If you’re on a company or campus network, proxies, firewalls, or DNS filtering can also cause ChatGPT to disconnect. Try a cleaner network temporarily, and disable any browser extensions that might rewrite requests to avoid misdiagnosing the problem.
White screen or endless loading: cache issues and extension conflicts are most common
If the page goes blank, buttons don’t respond, or it keeps loading forever, suspect browser cache problems or scripts being interfered with by extensions. A quick check is to log in to ChatGPT in an incognito/private window: if it works there, it’s very likely a cache, cookie, or extension issue.
A practical order is: clear this site’s cookies and cache first, then disable extensions one by one—especially ad blockers, script managers, and translation extensions. After this troubleshooting step, “page stuck” problems are often mostly resolved.

