When DeepSeek will not connect

Check the address and the service

Confirm whether the problem is on official chat, the API, or an independent application. A third-party service may have its own account, limits, or billing, so its error does not necessarily describe DeepSeek’s official service.

Open the official status page in a separate tab. It is a useful signal, not proof that every user or every route is working. This guide does not run a live status monitor.

For browser and sign-in problems

Keep the exact message and note when it occurred. Confirm that you are using the intended sign-in method and that your connection can load the official website. A private browser window can help distinguish a local extension or stored-session issue from a broader problem.

Change one thing at a time and check the result. If the issue persists, give official support the time, browser, device, and a redacted screenshot rather than sharing a password or login code.

For API errors, use the response code

Read the response body as well as the HTTP status. Official documentation distinguishes authentication failures, balance problems, invalid requests, rate limits, and server errors; repeatedly retrying cannot fix every category.

For a persistent issue, retain the timestamp, model identifier, status, and a sanitized request example. Keep API keys out of public logs and reports.

• 400 or 422: correct the request body or parameter named in the error.
• 401: check the API key and authentication.
• 402: check the account balance before retrying.
• 429: reduce request pace and concurrency; model and Search/Fetch quotas are separate.
• 500 or 503: wait briefly and use a bounded retry policy.