[BUG] Existing Pro account not recognized - Google Sign-In, Email Login and Claude Code CLI all redirect to "Let's create your account"

Preflight Checklist

• [x] I have searched existing issues and this hasn't been reported yet
• [x] This is a single bug report (please file separate reports for different bugs)
• [x] I am using the latest version of Claude Code

What's Wrong?

I found several related issues, but my case appears to be different because the same behavior also occurs when using Email Verification Code instead of Google OAuth.
Since July 13, 2026 (around 10:30 JST), I have been unable to access my existing Claude Pro account on the web, Claude Desktop, or Claude Code CLI.

When I try to sign in using either Google Sign-In or an email verification code, Claude immediately redirects me to the "Let's create your account" onboarding screen instead of recognizing my existing Pro account.

The issue is not limited to Google OAuth because the same behavior also occurs with email-code login.

My iOS Claude app remains logged in and fully functional under the same email address.

Claude Code CLI opens the browser-based login flow, but after authentication it redirects to the same account-creation page instead of completing login.

I have deliberately not clicked "Create account" because I am concerned that this may create a duplicate account.

Related issues:
#58566
#57164
#39788
#36797
#51002

I first contacted Anthropic Support on July 13. Eight days have passed, and I have requested escalation to a human specialist multiple times, but I have only received automated replies.

Because I cannot access my account settings, I am also unable to manage or cancel my Pro subscription myself. This is blocking my production work and preventing me from using a paid service.

What Should Happen?

Claude should recognize my existing Pro account and sign me in successfully on Web, Claude Desktop, and Claude Code CLI.

I should not be redirected to the account-creation or onboarding screen when using the same email address already associated with my active Pro account.

I should also be able to access my account settings and manage or cancel my subscription.

Error Messages/Logs

Login expired · Please run /login

Running `/login` starts the browser authentication flow, but after authentication the browser is redirected to "Let's create your account" instead of logging into my existing Pro account.

Steps to Reproduce

1. Have an existing Claude Pro account.
2. Open claude.ai and attempt to sign in using Google Sign-In.
3. The account is immediately redirected to "Let's create your account."
4. Repeat using Email Verification Code instead of Google Sign-In.
5. The same account creation page appears.
6. Run claude login in Claude Code CLI.
7. Browser-based authentication opens successfully.
8. After authentication, the browser is redirected to the same account creation page instead of completing login.

Claude Model

None

Is this a regression?

Yes, this worked in a previous version

Last Working Version

_No response_

Claude Code Version

Unknown (unable to run claude --version because login immediately expires)

Platform

Anthropic API

Operating System

macOS

Terminal/Shell

Terminal.app (macOS)

Additional Information

Related issues:
#58566
#57164
#39788
#36797
#51002

I first contacted Anthropic Support on July 13, 2026.

Eight days have passed and I have requested escalation multiple times, but I have only received automated replies.

This issue prevents me from using Claude Code for production work.

Because I cannot access my account settings, I am also unable to manage or cancel my Pro subscription.

My iOS Claude app remains authenticated under the same account, so this appears to be an account-recognition issue rather than a subscription issue.