Claude Not Working? 7 Quick Fixes and Error Solutions (2026)

Claude not working? Whether claude.ai will not load, you see “Claude is unable to respond”, your login link never arrives, or Claude Code refuses to start, the cause usually falls into one of six groups: an Anthropic outage, high demand, a usage limit, a login or phone-verification problem, your browser or network, or a tool-specific issue in Claude Code or an add-in. This guide starts with quick checks and then explains each error message and fix, using Anthropic’s own help pages and documentation wherever possible.

Man sitting in front of a laptop computer, troubleshooting Claude not working — Photo by Sebastian Herrmann on Unsplash

Last updated: 15 October 2026. The error messages and steps below were checked on 15 October 2026 against Anthropic’s Help Centre, the Claude status page and the Claude Code documentation. Anthropic changes its apps often, so menu names may differ slightly on your device.

Claude Not Working? Try These Quick Fixes First

Check the status page. Go to status.claude.com. If claude.ai, the API or Claude Code shows an incident, wait for Anthropic to fix it.
Wait a few minutes and retry. Anthropic says capacity errors during busy periods usually clear on their own.
Look for a usage-limit message with a reset time. If you see one, there is nothing to fix; you need to wait or use extra usage credits.
Start a new chat. Very long conversations or large attachments can hit the length limit.
Turn off your VPN and browser extensions, then clear the cache and cookies for claude.ai. This is Anthropic’s own advice for login errors.
Try another browser, the desktop app or the mobile app to see whether the problem is your device or your account.
Update the app if you use Claude on Windows, Mac, iPhone or Android, then sign out and back in.

If Claude works on one device but not another, the fault is local. If it fails everywhere at the same time as other people report problems, it is almost certainly on Anthropic’s side.

Is Claude Down Right Now?

Anthropic’s official status page, status.claude.com, tracks six components separately: claude.ai, the Claude Console (platform.claude.com), the Claude API, Claude Code, Claude Cowork and Claude for Government. When we checked on 15 October 2026, all six were operational. The page lists past incidents too; for example, it recorded elevated errors on platform.claude.com on 13 October and elevated errors for Claude Opus 5.5 on 6 October, both resolved.

You can subscribe to updates by email, SMS, Slack, Microsoft Teams, webhook or RSS, which is useful if you rely on Claude for work.

One important detail: Anthropic says capacity-related errors are not outages and do not appear on the status page. So “all systems operational” does not always mean Claude will answer straight away during a busy period.

Claude Error Messages and What They Mean

Anthropic’s Help Centre explains the most common messages. Here they are with the recommended fix:

Message	What it means	What to do
“Due to unexpected capacity constraints, Claude is unable to respond to your message. Please try again soon.”	High demand across Anthropic’s systems, not an outage	Wait a few minutes and try again
“Approaching session limit” or “Approaching weekly limit”	You are close to your five-hour or weekly usage limit	Finish important work first, or check your usage
“5-hour limit reached – resets [time]”	You have used your five-hour allowance and have no usage credits	Wait until the reset time shown
“You’ve reached your weekly limit. It resets [day] at [time].”	You have hit the weekly cap	Wait for the reset, or use usage credits if your plan supports them
“Now using credits. Your plan limit resets [day] at [time]”	Your requests are now billed to usage credits	No action needed unless you want to stop spending credits
“Your message will exceed the length limit for this chat.”	Your message or attachments are too long	Split the content, summarise it, attach fewer files or start a new chat
“There was an error logging you in”	A general login failure, often caused by the network or browser	Turn off VPN, disable extensions, clear cache and cookies, then check the status page

Anthropic notes that on paid plans with code execution, Claude summarises earlier messages automatically, so the length-limit error is now rare, although a very large first message can still trigger it.

Claude Usage Limit Reached

The most common reason Claude “stops working” is not a fault at all. Every plan has a usage allowance that resets on a five-hour cycle, plus a weekly limit. When you reach either, Claude shows the reset time. On paid plans with usage credits switched on, Claude can keep working on pay-as-you-go credits until your monthly spend limit or credit balance runs out.

To make your allowance last longer:

Start a new chat for each new task instead of continuing one very long conversation.
Attach only the files Claude needs.
Use a lighter model, such as Claude Sonnet 5.5, for everyday tasks and save Opus for the hardest ones. Our Claude Sonnet 5.5 guide explains the difference.
If you hit limits every week, compare the plans in our Claude pricing guide.

Can’t Log In to Claude

Claude offers two main ways to sign in: Continue with Google or Continue with email, which sends a secure login link. Anthropic’s Help Centre suggests these fixes.

The login email never arrives

Check your spam, junk and quarantine folders for mail from @mail.anthropic.com.
Add @mail.anthropic.com to your allowed senders.
Wait a few minutes and request the link again.
On a work, government or university email address, ask your IT team whether their email security is blocking it.

If you open the link on a different device from the one where you requested it, the email gives you a verification code to enter on the original device instead of logging you in directly.

“Continue with Google” fails

Anthropic recommends resetting the Google connection:

Go to myaccount.google.com/connections.
Select Claude by Anthropic.
Choose See details, then Stop using Sign in with Google.
Return to claude.ai and choose Continue with Google again.

The link or code does not work

Note the exact error, then check status.claude.com. If there is a wider incident, wait until it is resolved before trying again.

Phone Verification Problems

Claude may ask you to verify a phone number when you create an account. Anthropic says this is to prevent spam and abuse. Common reasons verification fails:

Unsupported number type: Anthropic does not accept VoIP numbers, Google Voice, numbers created with apps, landlines or numbers that cannot receive texts.
Unsupported location: the number must come from a country where Claude is available.
Too many accounts: a single phone number can verify a maximum of three Claude accounts.
Slow delivery: codes can take a few minutes. After more than five minutes, use Try again, check the number and resend. If you see “Error sending code. Double check your phone number.”, Anthropic says you will need a different number.

Is Claude Available in the UK and Europe?

Yes. Anthropic’s list of supported locations includes the United Kingdom and all 27 EU member states, including Germany, France, the Netherlands, Spain, Italy, Ireland, Sweden and Poland. If Claude says it is not available where you are, check whether a VPN is making it look as though you are in an unsupported country, and turn it off.

Claude Code Not Working

If you use Claude Code, Anthropic’s coding agent, the documentation points to these first steps:

Run a health check. Type /doctor inside Claude Code, or run claude doctor in your terminal if Claude Code will not start. It checks your installation, settings and extensions and proposes fixes.
“command not found” or install errors: these usually mean the install folder is not on your PATH. Anthropic’s installation troubleshooting page covers the fix for each system.
Login loops or “403 Forbidden”: run /login to sign in again, see the login section of Anthropic’s installation troubleshooting page, and check that your plan includes Claude Code.
“529 Overloaded”, “429” or “API Error: 5xx”: these are server-side or rate-limit errors listed in Anthropic’s error reference. Wait and retry, and check the status page.
Slow, high memory or frozen sessions: use /compact to shrink the conversation, restart between big tasks, or press Ctrl+C to cancel. Run claude --resume to pick your session back up.
Problems after installing plugins or MCP servers: start with claude --safe-mode to disable customisations, and run /mcp to check server status.
Report a bug: use /feedback inside Claude Code.

New to Claude Code? Our Claude Code beginner’s guide covers installation and setup step by step.

Claude Not Working in Google Sheets, Docs or Excel

Claude’s add-ins have their own requirements, and most problems come from these:

Google Docs, Sheets and Slides: the Claude for Google Workspace add-on is in beta on paid Claude plans only. Anthropic says it works in Chrome, Edge and Safari but not Firefox, the sidebar must stay open while Claude works, and each operation has a six-minute limit. On work accounts, your Google Workspace admin may need to allow the add-on. Our guide to Claude for Google Sheets walks through installation.
Excel: Claude for Excel needs a paid Claude plan and runs on Excel for the web, Windows and Mac, but not on iPad or Android. Our guide to using AI in Excel explains setup.

Claude Gives Wrong Answers, Broken Links or Claims It Did Something

Sometimes Claude “works” but the result is wrong. Anthropic’s Help Centre acknowledges that Claude can give incorrect or misleading answers, can produce links that do not work, and can wrongly claim that it has sent an email or created an external document when it has no tool to do so. Always check important facts against a trusted source, and only rely on actions Claude can actually take through connected tools.

How to Contact Claude Support

If nothing above helps, sign in at claude.ai, select your initials in the lower-left corner and choose Get help. Console users can do the same at platform.claude.com. Anthropic’s support article explains which plans can reach a human agent.

While you wait, a backup assistant keeps you working. If another tool is also misbehaving, see our guides to fixing ChatGPT not working and Gemini not working.

Frequently Asked Questions

Why is Claude not working today?

Check status.claude.com first. If there is no incident, you may have reached a usage limit, hit a capacity error during high demand, or have a browser, VPN or login problem on your side.

What does “Claude is unable to respond to your message” mean?

Anthropic says this message reflects unexpected capacity constraints caused by high demand. It is not an outage. Wait a few minutes and try again.

Why can’t I log in to Claude?

The most common causes are a login email caught by spam filters, a broken Google sign-in connection, a VPN or browser extension, or a temporary incident. Follow the login steps above.

Why won’t Claude accept my phone number?

Claude does not accept VoIP, Google Voice, app-generated or landline numbers, and one number can verify a maximum of three accounts.

Does Claude work in the UK?

Yes. The United Kingdom is on Anthropic’s list of supported locations, along with every EU member state.

How do I fix Claude Code not working?

Run /doctor in Claude Code or claude doctor in your terminal, sign in again with /login, and see Anthropic’s error reference for messages such as 529 Overloaded.

Conclusion

When Claude is not working, start with the status page, then read the exact message on screen: capacity errors and usage limits need patience, while login, phone verification, browser and VPN problems usually have a quick fix on your side. Claude Code and the Google Sheets and Excel add-ins have their own checks. If nothing works, contact Anthropic through Get help and keep a backup assistant ready for urgent work.

Sources: Claude status page; Anthropic Help – Troubleshoot Claude error messages; Anthropic Help – Log in to your Claude account; Anthropic Help – Verify your phone number; Anthropic Help – Where can I access Claude; Anthropic Help – Links that don’t work; Anthropic Help – How to get support; Claude Code – Troubleshooting; Anthropic Help – Claude in Google Docs, Sheets and Slides.

Claude Not Working? 7 Quick Fixes, Error Messages and Claude Code Solutions (2026)

Claude Not Working? Try These Quick Fixes First

Is Claude Down Right Now?

Claude Error Messages and What They Mean

Claude Usage Limit Reached