claude-code - 💡(How to fix) Fix [Bug] Authentication Error: 401 Unauthorized on API Requests [1 comments, 2 participants]

[{"error":"AxiosError: Request failed with status code 401\n at hn (B:/~BUN/root/src/entrypoints/cli.js:115:1194)\n at <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:120:12716)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (B:/~BUN/root/src/entrypoints/cli.js:122:2467)\n at async Kk (B:/~BUN/root/src/entrypoints/cli.js:444:4918)\n at async <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:2713:190)\n at async <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:6874:23779)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T16:28:51.285Z"},{"error":"AxiosError: Request failed with status code 401\n at hn (B:/~BUN/root/src/entrypoints/cli.js:115:1194)\n at <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:120:12716)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (B:/~BUN/root/src/entrypoints/cli.js:122:2467)\n at async x6A (B:/~BUN/root/src/entrypoints/cli.js:6531:4763)\n at async <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:6531:5994)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T16:28:51.822Z"},{"error":"AxiosError: Request failed with status code 401\n at hn (B:/~BUN/root/src/entrypoints/cli.js:115:1194)\n at <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:120:12716)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (B:/~BUN/root/src/entrypoints/cli.js:122:2467)\n at async aJ9 (B:/~BUN/root/src/entrypoints/cli.js:3168:14725)\n at async b27 (B:/~BUN/root/src/entrypoints/cli.js:3168:15264)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T16:28:51.822Z"},{"error":"AxiosError: Request failed with status code 401\n at hn (B:/~BUN/root/src/entrypoints/cli.js:115:1194)\n at <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:120:12716)\n at emit (node:events:92:22)\n at endReadableNT (internal:streams/readable:865:50)\n at processTicksAndRejections (native:7:39)\n at request (B:/~BUN/root/src/entrypoints/cli.js:122:2467)\n at async <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:9254:20340)\n at async Kk (B:/~BUN/root/src/entrypoints/cli.js:444:4918)\n at async EEA (B:/~BUN/root/src/entrypoints/cli.js:9254:20097)\n at async ZE_ (B:/~BUN/root/src/entrypoints/cli.js:9254:20732)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-04-30T16:28:52.119Z"},{"error":"Error\n at generate (B:/~BUN/root/src/entrypoints/cli.js:11:57485)\n at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:4943)\n at processTicksAndRejections (unknown:7:39)","timestamp":"2026-05-01T02:09:49.274Z"},{"error":"SUH: Failed to install new version of claude: npm error code EBUSY\nnpm error syscall copyfile\nnpm error path C:\Users\sargb\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\node_modules\@anthropic-ai\claude-code-win32-x64\claude.exe\nnpm error dest C:\Users\sargb\AppData\Roaming\npm\node_modules\@anthropic-ai\.claude-code-FPgVQFmD\node_modules\@anthropic-ai\claude-code-win32-x64\claude.exe\nnpm error errno -4082\nnpm error EBUSY: resource busy or locked, copyfile 'C:\Users\sargb\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\node_modules\@anthropic-ai\claude-code-win32-x64\claude.exe' -> 'C:\Users\sargb\AppData\Roaming\npm\node_modules\@anthropic-ai\.claude-code-FPgVQFmD\node_modules\@anthropic-ai\claude-code-win32-x64\claude.exe'\nnpm error A complete log of this run can be found in: C:\Users\sargb\AppData\Local\npm-cache\_logs\2026-05-01T02_10_51_605Z-debug-0.log\n at zY8 (B:/~BUN/root/src/entrypoints/cli.js:2823:2203)\n at async <anonymous> (B:/~BUN/root/src/entrypoints/cli.js:9053:10782)\n at processTicksAndRejections (native:7:39)","timestamp":"2026-05-01T02:10:52.538Z"},{"error":"Error\n at generate (B:/~BUN/root/src/entrypoints/cli.js:11:57485)\n at makeRequest (B:/~BUN/root/src/entrypoints/cli.js:50:4943)\n at processTicksAndRejections (unknown:7:39)","timestamp":"2026-05-01T02:11:43.851Z"},{"error":"SUH: Failed to install new version of claude: npm error code EBUSY\nnpm error syscall copyfile\nnpm error path C:\Users\sargb\AppData\Roaming\npm\node_modules\@anthropic-ai\claude-code\node_modules\@anthropic-ai\claude-code-win32-x64\claude.exe\nnpm error dest C…

TL;DR

The most likely fix is to address the authentication issue causing the 401 error, possibly by re-authenticating or checking token validity.

Guidance

• Check Authentication Tokens: Verify that authentication tokens are valid and not expired, as 401 errors often indicate authentication issues.
• Re-authenticate: Attempt to re-authenticate to obtain a new token or session, which might resolve the issue if the current token is invalid or expired.
• Review API Request: Examine the API request being made to ensure it includes the necessary authentication headers or parameters.
• Inspect Error Logs: Look into the detailed error logs provided for any clues about the authentication failure, such as specific error messages related to token validation or authentication mechanisms.

Example

No specific code example can be provided without more context on the authentication mechanism used, but ensuring that authentication tokens are properly included in requests (e.g., via headers like Authorization: Bearer <token>) is crucial.

Notes

The provided error logs suggest repeated authentication failures, indicating a potential issue with how authentication is being handled in the application. Without more specific details on the authentication flow or the exact requests being made, it's challenging to provide a more targeted solution.

Recommendation

Apply a workaround by re-authenticating and verifying token validity, as this directly addresses the 401 error messages indicating authentication failures.