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HomeTips & TricksChatGPTChatGPT Troubleshooting Guide: Endless Loading Spinner, Send Failures, and 403 Blocks

ChatGPT Troubleshooting Guide: Endless Loading Spinner, Send Failures, and 403 Blocks

2/22/2026
ChatGPT

If ChatGPT won’t open, keeps spinning, or your messages won’t send, it’s usually not because “you did something wrong,” but because of a combination of network issues, browser cache, or server-side fluctuations. This article walks through ChatGPT troubleshooting in order of priority, so you can restore usability with the fewest changes first, then decide whether further action is needed.

Start with a ChatGPT troubleshooting check: confirm whether it’s a server-side fluctuation

Before starting ChatGPT troubleshooting, first open the status page at status.openai.com to see whether there are any API or web alerts; if there’s a widespread outage, the most time-saving approach is simply to wait and try again. If there are no alerts but the issue persists, quickly cross-check by switching to another device or network to avoid repeatedly troubleshooting in the same environment.

Blank page or endless loading spinner: cache, extensions, and “accelerators” are the most common

For this type of ChatGPT troubleshooting, start with the browser: log in once using an incognito/private window. If it works there, it’s most likely a cache issue or an extension conflict. Temporarily disable ad blockers, script managers, and proxy/VPN-type extensions, then clear the site cache and cookies—this usually resolves “stuck loading” or a blank interface.

Message send failures and Network error: check network stability first

If you see “send failed,” “Network error,” or the conversation disconnects mid-way, ChatGPT troubleshooting should first rule out network jitter: switch to a more stable Wi‑Fi/wired connection, or temporarily disable accelerators and corporate proxies that rewrite traffic. Longer content is also more likely to trigger disconnects—try splitting your prompt into two parts, confirm the connection is stable, and then continue.

429/Too Many Requests: throttling and reducing concurrency are what works

If you encounter a 429 message, the key in ChatGPT troubleshooting isn’t hammering refresh, but “reducing request frequency.” Stop for a minute or two, close extra tabs, and avoid generating in multiple windows at once. If you’ve been uploading files frequently or repeatedly retrying in a short time, it’s easy to push yourself into rate limits; waiting a bit usually restores access automatically.

403/1020 blocks or login loops: start with time, DNS, and environment

403/1020 is more like an access block or a risk-control trigger. For ChatGPT troubleshooting, first set your system time to automatic sync, then try switching DNS to 1.1.1.1 or 8.8.8.8. If you’re on a corporate network, campus network, or public hotspot, gateway blocking and captive-portal verification pages can cause login loops; switching to a mobile hotspot often immediately confirms the source of the issue.

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