OAuth Authentication Not Supported for Highest Plan Tier
Status Closed — duplicate
Maintainer reply None cached
Workaround ✓ Mentioned in thread ↓
Activity 23 comments · opened Aug 17, 2025 · closed Aug 22, 2025
Bug Description
I have subscribed to highest plan. But I am getting this error related to auth. API Error: 401 {"type":"error","error":{"type":"authentication_error","message":"OAuth authentication is currently not supported."}}
Environment Info
- Platform: darwin
- Terminal: vscode
- Version: 1.0.83
- Feedback ID: aac548da-e00b-4de2-807f-55f56d3910a1
Errors
[{"error":"Error: 401 {\"type\":\"error\",\"error\":{\"type\":\"authentication_error\",\"message\":\"OAuth authentication is currently not supported.\"}}\n at D6.generate (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:942:2449)\n at sP.makeStatusError (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:959:2101)\n at sP.makeRequest (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:959:5315)\n at process.processTicksAndRejections (node:internal/process/task_queues:105:5)\n at async KSB.sG1.showErrors (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:24578)\n at async sG1 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:13705)\n at async KSB (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:24429)\n at async file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:19524\n at async cN0 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:5164)\n at async V01 (file:///opt/homebrew/lib/node_modules/@anthropic-ai/claude-code/cli.js:1875:19494)","timestamp":"2025-08-17T02:58:25.584Z"}]
23 Comments
Found 3 possible duplicate issues:
This issue will be automatically closed as a duplicate in 3 days.
🤖 Generated with Claude Code
I can add this: It is NOT environmental, and not account specific. I have tried multiple devices, uninstalled, reinstalled, two different pro accounts. I get it constantly. My theory is its a an undisclosed rate limit.
I got it multiple times yesterday. The logout and login worked twice, on both accounts. Then first one, then the other stopped working with the 401, and are now both getting the error consistently. I was doing a heavy workload yesterday. This is deliberate.
SOLUTION! The solution is to downgrade to 1.0.81. Fixed immediately and permanently. I verified by going back to 1.0.82/3, and the problem returned.
Took me half a day to find the solution. Sharing so others dont have to.
Sometimes logging out and in will work, but in my two pro plans eventually that didn't either.
Downgrade works like a charm.
Downgrading to 1.0.81 also worked for me. I was on 1.0.83 when I ran into this same error
I'm getting this right now on the regular $20 plan, how can you downgrade if the app upgrades automatically?
npm install -g @anthropic-ai/claude-code@1.0.81I also run into this issue with the Max plan. The downgrade to 1.0.81 helped directly. Previous try to /logout and /login was not a solution. I was updated to 1.0.83 automatically.
Getting this error on the Max plan. I tried logging in and out and restarting claude code.
Update: Closing the iterm window and releaching claude in a new window resolved it
That works a few times, but then stops working. Downgrading to 0.81 fixed it permanently for me.
same here.
just downgraded to
1.0.81and it works fine.the issue persists!
Did you check you dont have more than one location? Check claude --version. It needs to be 0.81 or lower.
it works when i downgrade, but it is still a bug. what do you mean by more than one location?
This bug ahem gets worse. Claude code is now choosing to ignore claude
config set autoUpdates false --globaland force you to upgrade. It does this every time I hit the rate limit, and I have to downgrade again to get back to work.Its a curiously consistent sort of bug, that escalates on a fixed set of rules, each time making harder to keep working after you hit the rate limit:
Curiouser and curiouser...all that escalation in 5 days.
Please fix it ASAP. Why should people buy "Max" plan and struggle?
Reporting the same experience/bug over the last two days.
Logging out/closing terminal, and logging back in is indeed only a temporary fix (tested on both Mac + PC/Windows).
I also downgraded to 1.0.81 and so far no issues.
Same here.
I just updated to 1.0.85 and the issue is NOT fixed. Are you kidding me? Without downgrading claude code has now been unusable for nearly a week on the max plan. This is absolutely unacceptable. plan cancelled.
https://github.com/anthropics/claude-code/issues/5937#issuecomment-3193859429
Just learned the downgrade to 1.0.81. Luckily I just applied to the Pro plan but, still this is unacceptable. What's more.. After days trying to speak to a human agent... radio silence. Is anybody at Anthropic reading this forum ?? How, on earth, is the bug still present ??!??! isn't there enough noise ??
Apparently you can just /exit and and start Claude again and it should be fixed.
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.