If Claude suddenly stops replying, keeps loading, or won’t upload files, it’s usually not that the model is “broken.” In most cases, it’s a mix of network instability, browser cache issues, permission blocks, or temporary service fluctuations. Below is a practical Claude troubleshooting checklist for the most common scenarios, helping you narrow the problem down to something you can actually fix.
Start with 3 basic Claude troubleshooting steps (fastest fixes)
Step one: refresh the page and start a new chat. Sometimes an older conversation’s context gets too long and triggers a timeout, making it look like Claude is down. Step two: switch networks (swap between Wi‑Fi and a mobile hotspot). A lot of “no response” cases are actually caused by connection jitter or corporate network policy blocking. Step three: clear your browser cache and retry after disabling ad blockers or script-blocking extensions—this is one of the most common breakthrough steps in Claude troubleshooting.
Claude not responding / stuck loading: focus on the chat and browser
If Claude shows it’s thinking but never returns an answer, shorten your input first: turn long paragraphs into bullet points and send them in smaller batches to avoid response timeouts. If you have multiple tabs open chatting at the same time, keep only one to reduce lag caused by concurrent sessions. If this round of Claude troubleshooting still doesn’t help, log in using an incognito/private window to rule out corrupted local cookies.
File upload failures and parsing errors: check format, size, and permissions
When Claude fails to upload an attachment, first confirm the file isn’t in use (for example, still syncing or currently open), and try saving a new copy before uploading again. Next, check file format and size: convert images to common formats and compress them appropriately; for documents, remove oversized embedded images or scanned pages where possible. If uploads fail frequently on a work computer, this type of Claude troubleshooting often points to browser download/upload permissions or security software blocking—temporarily test with a personal network and incognito mode to verify.
Rejected requests, rate limits, and service instability: wait when needed, switch when necessary
If you see messages like request rejected, verification required, or too many requests in a short time, pause for a few minutes and try again—repeated rapid retries are more likely to trigger limits. This is a Claude troubleshooting step many people overlook. If you suspect server-side fluctuations, check the official status page for maintenance or partial outages (status.anthropic.com) to quickly confirm whether it’s an environment issue on your end. If the service looks normal but problems persist, the last move is to switch browsers or log in from another device to determine whether the issue is account-side or device-side, making it easier to continue Claude troubleshooting or submit a support ticket with screenshots.
