Claude Not Working? How to Fix Common Problems (2026)

Quick Fix: Most issues are solved by clearing cache, checking your subscription, or reconnecting your account. Try these fixes in order.

Fix #1: Claude is at capacity

Wait a few minutes. Try during off-peak hours. Claude Pro users get priority access.

Fix #2: File upload fails

Check file size (max 10MB per file). Supported formats: PDF, TXT, CSV, MD, HTML, images. Try converting to PDF.

Fix #3: Long document not processed

Even with 200K context, very large files may fail. Split into smaller chunks and upload separately.

Fix #4: Claude refuses to help

Claude has strong safety guidelines. Rephrase your request to be more specific about the legitimate use case.

Fix #5: Conversation lost

Claude does not save conversations permanently on free tier. Copy important responses before closing the tab.

Fix #6: Slow responses

Claude Pro and Team get faster responses. Free tier may be slower during peak usage.

Fix #7: API connection errors

Check your API key. Verify rate limits. Anthropic status page shows current service status.

Fix #8: Mobile access issues

Claude works on mobile browsers. There is also a dedicated mobile app. Clear cache if issues persist.