Encountering errors while using Claude is common, particularly login failures, message restrictions, or subscription payment issues. This guide compiles the most frequent error codes with actionable solutions, helping you resume normal usage quickly without repeated trial and error.
Login Failures: Captcha & Network Fixes
When logging into Claude, errors like “Invalid credentials” or “Verification code expired” usually stem from incorrect captcha entry or timeout. Refresh the page to get a new code, enter it within 60 seconds, and avoid public Wi-Fi. If you repeatedly see “Account locked,” it is likely due to multiple failed password attempts triggering security protection. Wait 15 minutes before trying again, or reset via “Forgot password.” Some users experience “Unable to connect to server”—first check your local network, disable VPN or proxy, and try a direct connection, as Claude may respond poorly to certain nodes.
Browser cache can also cause login issues. Clear cookies and cache, then restart the browser—this usually resolves the problem. If the error persists, try a different browser or incognito mode to rule out extension conflicts.
Message Limits & Request Errors: Quota & Resource Exhaustion
Free-tier users often see “Rate limit exceeded” or “You have reached your message cap” because Claude’s free accounts have a limited number of requests per hour. Wait 30 minutes or upgrade to the Pro plan to lift the restriction. Pro users may occasionally encounter “Resource temporarily unavailable,” typically during peak hours when servers are overloaded. Retry later or schedule usage during off-peak times. If you input overly long content triggering “Input too long,” split it into smaller segments that stay within Claude’s context window. For API calls returning “429 Too Many Requests,” review your request frequency and set appropriate intervals according to the documentation.
