Claude Troubleshooting Guide: Handling Message Send Failures, Blank Pages, and Conversation Interruptions

If Claude won’t open, messages won’t send, the page is blank, or a conversation suddenly disconnects, it’s most likely an issue with your network, browser cache, or login session. This article troubleshoots Claude errors in the order of “locate first, then fix,” aiming to restore things quickly with the fewest steps.

Start with two Claude troubleshooting steps: status and network

When troubleshooting Claude, first confirm whether there’s a server-side fluctuation: open Anthropic’s status page (status.anthropic.com) to see whether there are any alerts. If the status is normal, switch networks once (toggle between Wi‑Fi and cellular data) or change your node to avoid request timeouts caused by local line instability.

If you’re on a corporate or campus network, proxies, gateways, or content filtering may also cause Claude requests to fail. In that case, testing with your phone’s hotspot is the most straightforward: if the hotspot works but the original network doesn’t, the issue is basically on the network side.

Login loops, repeated verification: clear cookies and use incognito mode

The most common issue in Claude troubleshooting is being redirected back to the login page after logging in, or repeated verification pop-ups. First, open Claude in an incognito window; if it works in incognito, that indicates a conflict with cookies, cache, or extensions.

Recommended order of fixes: log out and log back in; if it still doesn’t work, clear site data (only cookies and cache related to claude.ai); finally, disable extensions such as ad blockers, script managers, and privacy/anti-tracking tools and try again. After it works, re-enable extensions one by one to identify the conflicting item.

Message send failure or endless loading: resend, shorten input, and check files

When Claude shows “send failed,” keeps spinning, or returns a blank reply, you can first copy your question, refresh the page, and send it again. If it can send but often fails, try splitting long content into several submissions to avoid an oversized request or a mid-request network drop.

When file uploads are involved, first confirm whether the file type is supported, whether the size exceeds the limit, and whether the filename contains special characters. If an upload gets stuck, switching browsers or using a more stable network is usually more effective than repeatedly clicking retry.

Conversation interrupted, quota prompts, or abnormal responses: start a new chat and reduce complexity

If you encounter “conversation interrupted” or “abnormal response” during Claude troubleshooting, you can start a new chat and ask again to avoid the old conversation context becoming too long and increasing generation load. Breaking the request into “outline first → then expand section by section” can also significantly reduce the chance of interruptions.

If you see quota-related prompts, you usually need to wait for the quota to refresh or reduce high-frequency requests. In that case, it’s better to combine questions and state the goal and constraints clearly in one go, so Claude can complete the same work in fewer turns.