BUG: Unauthorized request. No authorization header found

Support Bug Reports
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1

Where does the bug appear (feature/product)?

Cursor IDE

Describe the Bug

I cant send a request to an LLM in the latest version of cursor (Version: 2.3.34).

I just receive
“Unauthorized request.
No authorization header found”

Please look into this cursor team! :slight_smile:

Steps to Reproduce

Enter LLM query in the side panel view

Expected Behavior

LLM responds.

Operating System

MacOS

Current Cursor Version (Menu → About Cursor → Copy)

Version: 2.3.34
VSCode Version: 1.105.1
Commit: 643ba67cd252e2888e296dd0cf34a0c5d7625b90
Date: 2026-01-10T21:17:10.428Z
Electron: 37.7.0
Chromium: 138.0.7204.251
Node.js: 22.20.0
V8: 13.8.258.32-electron.0
OS: Darwin x64 24.1.0

For AI issues: which model did you use?

Auto

For AI issues: add Request ID with privacy disabled

Request ID: a7af7b1d-53ef-457b-a5b6-6aa29f3560eb
{“error”:“ERROR_UNAUTHORIZED”,“details”:{“title”:“Unauthorized request.”,“detail”:“No authorization header found”,“isRetryable”:false,“additionalInfo”:{},“buttons”:,“planChoices”:},“isExpected”:true}

Does this stop you from using Cursor

Yes - Cursor is unusable

3

Hey, thanks for the report

Try these steps:

  1. Check Cursor Settings > Models - is there an overridden Base URL? If yes, disable it
  2. Sign out and sign in via Cursor Settings > General > Sign Out
  3. Fully restart Cursor

Let me know if it helped. If not, send a screenshot from Cursor Settings > Models (to see active settings).