[BUG] Claude Code OAuth Authentication Fails - "OAuth account information not found in config"

Some things you can try:

1. Remove ~/.claude.json, not just ~/.claude.
2. Can you check if your network allows https://api.anthropic.com? Claude Code makes a couple calls there for authentication.
3. Can you try downloading and logging in to a newer version (v1.0.11, for example)

Some things you can try: 1. Remove ~/.claude.json, not just ~/.claude. 2. Can you check if your network allows https://api.anthropic.com? Claude Code makes a couple calls there for authentication. 3. Can you try downloading and logging in to a newer version (v1.0.11, for example)

Update: Even single character commands like 'h' or 'pwd' result in the same error:
"API Error: Cannot convert argument to a ByteString because the character at index 0 has a value of 8217"

This happens with ANY input, suggesting a critical bug in Claude Code's character encoding handling.

Environment details:

• macOS Terminal works fine (echo "test" works)
• Using API key authentication (Max member OAuth also failed)
• Error persists after removing all config files
• Version: [run claude --version to check]

There seems to be a different error here related to your input.

The character at index 0 with value 8217 is a right single quotation mark (' - Unicode U+2019). This is a "smart quote" or "curly quote" that's commonly inserted by word processors, rich text editors, or when copying text from formatted documents.

Can you share a screenshot of the API Error and also the result of /status?

Here's the screenshot showing both the API error and /status result:

<img width="570" alt="Image" src="https://github.com/user-attachments/assets/a06de5bd-aad1-4807-bf1a-dc811a6d2f80" />

Key observations:

• Error occurs when typing single character 'h'
• Claude Code Status: v1.0.11
• Auth Token: none (using API Key authentication instead)
• API Key: ANTHROPIC_API_KEY (environment variable)
• Model: claude-sonnet-4-20250514
• Working Directory: /Users/moment

The error happens with ANY input, suggesting the issue is in Claude Code's input handling before it reaches the API.

Ok I think there's something wrong with how the OAuth was saved. Can you try:

1. security delete-generic-password -a $USER -s "Claude Code-credentials"
2. Run /login again.

If that still doesn't work, I don't have many remaining ideas...

Thank you for the suggestion! It helped uncover the root cause:

What I discovered:

1. security delete-generic-password returned "item could not be found" - meaning OAuth credentials were never saved to keychain
2. This explains why authentication never persists

Testing OAuth flow:

• OAuth browser flow completes successfully
• But Claude Code fails with: "Failed to fetch user roles: Request failed with status code 403"
• Since user roles can't be fetched, credentials are never saved to keychain
• This creates the authentication loop

Two separate bugs identified:

1. OAuth Bug: 403 error when fetching user roles (prevents Max subscription login)
2. Input Bug: ByteString encoding error with ANY input after authentication fails

The OAuth credentials not being in keychain is a symptom, not the cause - they can't be saved because the user role fetch fails with 403.

Environment: macOS, Max subscription, v1.0.11

You may be running into the following issue: https://www.anthropic.com/supported-countries

Thanks for your patience in debugging this with me.

Actually, based on the fact that you see "fetching user roles", you are likely going through the "Anthropic Console account" flow instead of the "Claude account with subscription" flow. Ensure that you are selecting "Claude account with subscription" if you want to use your Claude Max plan.

Fixed my issue. Thx

Sorry to reopen the issue but I am getting this right now, maybe related to the outage that you guys had today:

claude -p hi
API Error: 401 {"type":"error","error":{"type":"authentication_error","message":"Invalid OAuth token. The provided token was not found or is malformed."}}

I am trying to use my claude code account. I've already removed the .claude files, reinstalled the npm package and logged out & back in, same deal.

Any ideas?

Must be an outage. I just encountered the same.

Same

Same here, time to hit the hay

Same

same

Hopping on the "same" bandwagon

same me too

same :)

Same

Same

Same

Same

seems to be working for me now

When your dealers phone stops working

lmaoooo all bros here

time to hit the gym

same here. I thought it was because I installed both the local and global versions of Claude Code by mistake, but it seems to be a bug.

<img width="681" height="140" alt="Image" src="https://github.com/user-attachments/assets/cc087959-e7cf-43a9-98b1-6a17ffe6989e" />

same issue here

I'm having the same issue with the exact same error message. Haven't logged in for a week... Definitely on Anthropic's side.

same issue.

same issue.

same please fix it

Facing the same issue as of today.

We paged our accounts oncall and are trying to address the issue ASAP.

same issue

Why hasn't Anthropic opened an issue I wonder? It's not showing as down on the status page...

https://status.anthropic.com/

ok its an outage then :)

Phew I thought it was just me

maybe i'm just lucky, but i re-authenticated and it's working now. Accessing via Claude Pro subscription in WSL

same here

its still happening right?

back up now

Same error here, happy to see I am not alone, and we are both happen on the same day.

The incident should now be resolved. Thank you for your patience.

\- Claude Code oncall

Still facing this issue. Have tried:

1. security delete-generic-password -a $USER -s "Claude Code-credentials"
2. Run /login again.

<img width="711" height="242" alt="Image" src="https://github.com/user-attachments/assets/a89b94ca-ddf6-4089-9425-c839d2130393" />

Facing this issue again today!

This issue has been automatically locked since it was closed and has not had any activity for 7 days. If you're experiencing a similar issue, please file a new issue and reference this one if it's relevant.