Claude Login Link Not Working: How to Fix

Claude uses a passwordless login system that relies on "magic links" sent directly to your registered email address. If you are trying to sign in and the magic link is not arriving, is arriving expired, or is returning an error when clicked, several local or network-level factors are likely interfering with the authentication token.

Here is how to troubleshoot and resolve Claude login link issues.

Why Claude Login Links Fail

Claude login links contain a unique, time-sensitive security token. These links fail for three main reasons: 1. Link Expiration: The magic link is only valid for 15 minutes. If your email client delays delivery, the link is already dead when you click it. 2. Security Scanners: Email protection software (like Mimecast, Barracuda, or Microsoft Safe Links) often "pre-clicks" links to scan them for malware, which instantly invalidates the one-time login token. 3. Session Mismatch: Requesting a link in one browser or device and opening it in another can cause authentication to fail.

How to Fix Claude Login Link Issues

Follow these troubleshooting steps in order to isolate and fix the problem.

1. Match Your Browser Sessions Magic links are session-bound. For security reasons, you must open the link in the exact same browser window and device where you requested it. 1. Open your browser and go to the Claude login screen. 2. Input your email address and click **Send Login Link**. 3. **Do not close this tab or open an incognito window.** 4. Open your email client in a *new tab within the same browser session*. 5. Click the login link. It should authorize the original tab.

2. Prevent Email Security Link-Stripping If you are using a corporate email address or a high-security inbox, security filters may be invalidating your magic links. 1. Look at the URL of the magic link in your email. If it begins with something like `https://urldefense.proofpoint.com/...` or `https://nam02.safelinks.protection.outlook.com/...`, a corporate filter is altering the link. 2. Copy the *original* raw URL if your mail client allows you to view the plain-text email header or original source. 3. Alternatively, ask your IT administrator to whitelist the domain `*.anthropic.com` and `*.claude.ai` from active link rewriting rules.

3. Switch to Google or Apple Authentication If your email provider continuously delays or blocks Claude's transactional emails, bypass the magic link system entirely. 1. On the Claude login page, instead of entering your email, select **Continue with Google** or **Continue with Apple**. 2. Ensure the Google or Apple account you select uses the exact same email address as your original Claude account. 3. This associates your account with third-party single sign-on (SSO), allowing you to bypass one-time email codes entirely.

4. Clear Browser Storage and Try Again Cached data can sometimes loop your browser back to an expired session state. 1. Clear your browser cookies and site data for `claude.ai`. 2. On Chrome: Click the padlock icon next to the URL, select **Site settings**, and click **Clear data**. 3. Close all open tabs, open a single new window, and request a fresh login link.

When to Escalate

If you have completed these steps and still do not receive the email, or if every link returns an expired error, check the Claude status page to ensure there is no ongoing transactional mail delivery outage. If the status page is green, contact support. Provide them with your registered email, your browser type, and whether you are using a private or corporate email domain.