Find your error
Match the message you see to a section below.
| Message | Section |
|---|---|
API Error: 500 Internal server error | Server errors |
API Error: Repeated 529 Overloaded errors | Server errors |
Request timed out | Server errors, or Network if the message mentions your internet connection |
API Error: No response from API | Server errors |
Server error mid-response. The response above may be incomplete. | Server errors |
Connection lost mid-response / Your computer went to sleep mid-response / The response stopped arriving | Server errors |
Connection closed mid-response / Response stalled mid-stream | Server errors |
Connection lost before a response was produced / Your computer went to sleep before a response was produced / The response stalled before a response was produced | Automatic retries |
Connection closed while thinking / Response stalled while thinking | Automatic retries |
Connection lost while your computer was asleep | Automatic retries |
<model> is temporarily unavailable, so auto mode cannot determine the safety of... | Server errors |
Auto mode could not evaluate this action and is blocking it for safety | Server errors |
Auto mode classifier transcript exceeded context window | Server errors |
Agent aborted: auto mode classifier request refused by the safety safeguard | Server errors |
Agent terminated early due to an API error | Server errors |
You've hit your session limit / You've hit your weekly limit / You've hit your Opus limit / You've hit your Sonnet limit | Usage limits |
Usage credits required for 1M context | Usage limits |
the prompt to confirm went unanswered — nothing was sent | Usage limits |
Server is temporarily limiting requests | Usage limits |
Request rejected (429) | Usage limits |
Credit balance is too low | Usage limits |
Could not update your spend limit | Usage limits |
spend limit reached / spend limit unavailable | Usage limits |
Not logged in · Please run /login | Authentication |
Could not resolve authentication method | Authentication |
Invalid API key | Authentication |
Your apiKeyHelper script is failing | Authentication |
Invalid auth token · Fix external auth token | Authentication |
Invalid ANTHROPIC_CUSTOM_HEADERS · Fix the environment variable | Authentication |
Invalid request header from the environment · Fix the environment variable | Authentication |
This organization has been disabled | Authentication |
Your organization has disabled API key authentication | Authentication |
Your organization has disabled Claude subscription access | Authentication |
Routines are disabled by your organization's policy | Authentication |
Remote Control is only available when using Claude via api.anthropic.com | Authentication |
OAuth token refresh failed — run /login to re-authenticate | Authentication |
JWT refresh failed: no OAuth token — run /login | Authentication |
Claude.ai login expired | Authentication |
Claude.ai login was rejected — run /login, then /remote-control | Authentication |
OAuth token unavailable — run /login to restore Remote Control | Authentication |
Signed out of Claude — run /login, then /remote-control | Authentication |
signed-in claude.ai account or organization changed on this machine | Authentication |
Remote Control stopped — the app running this session is now signed in to a different Claude account | Authentication |
Remote Control stopped — the app running this session is signed out of Claude | Authentication |
OAuth token revoked / OAuth token has expired | Authentication |
API Error: 401 Invalid authentication credentials | Authentication |
Login expired · Please run /login | Authentication |
Not signed in to the Cloud gateway — run /login. | Authentication |
Administrator policy requires a Cloud gateway sign-in on this machine | Authentication |
Failed to authenticate: OAuth session expired and could not be refreshed | Authentication |
Your account is on hold and can't use Claude Code. View details or appeal: https://claude.ai/restricted | Authentication |
Your account is on hold and can't sign in to Claude Code. View details or appeal: https://claude.ai/restricted | Authentication |
Anthropic profile login expired · Re-authenticate your Anthropic profile | Authentication |
Anthropic profile login expired · Run /login to use your claude.ai account instead, or re-authenticate the profile | Authentication |
does not meet scope requirement user:profile | Authentication |
claude.ai rejected the session token / session token rejected | Authentication |
Issuer mismatch in authorization response (RFC 9207) | Authentication |
Cloud gateway session expired — run /login to reconnect. | Authentication |
Cloud gateway <url> no longer accepts this session | Authentication |
AWS credentials expired or invalid | Authentication |
AWS authentication failed | Authentication |
Could not load AWS credentials / Could not load Google Cloud credentials | Authentication |
AWS default-chain credential resolve timed out | Authentication |
Timed out after 60s waiting for AWS | Authentication |
A request to AWS timed out. Check your network and proxy settings, then try again. | Authentication |
Could not load the default credentials on Google Cloud's Agent Platform | Authentication |
Unable to connect to API | Network |
Connection refused — / Can't reach the API server — / No internet route — / Couldn't connect through your proxy / Connection dropped, each ending with an error code in parentheses | Network |
Unable to connect to Anthropic services during setup | Network |
Socket is closed | Network |
Waiting for API response · will retry in | Automatic retries, or Network if it persists |
API returned an empty or malformed response | Network |
Streaming response ended before any complete data was received | Network |
Bedrock streaming response has content-type "..."; expected "application/vnd.amazon.eventstream" | Network |
SSL certificate verification failed | Network |
SSL certificate error (...) during login or startup | Network |
unable to get local issuer certificate | Network |
403 with x-deny-reason: host_not_allowed in a cloud or routine session | Network |
proxy refused the connection | Network |
403 with This GraphQL query is not enabled for this session in a cloud session | GitHub proxy |
The cloud environments service returned an empty response / The cloud environments service returned a response in an unexpected format | Network |
Couldn't reconnect to your Remote Control session | Network |
N sessions ended while this machine was offline — the environment was cleaned up on the server and can't be resumed. | Network |
Couldn't share the transcript. | Network |
Prompt is too long / Input is too long for requested model | Request errors |
Prompt is too long · automatic compaction failed: | Request errors |
Prompt is too long · this conversation is a single exchange / A single-exchange conversation cannot be compacted | Request errors |
Context limit reached · /compact or /clear to continue | Request errors |
Context limit reached · /clear to continue | Request errors |
capability_rejected: prompt_too_long on a Claude apps gateway session | Request errors |
upstream rejected the request / request too large for this upstream on a Claude apps gateway session | Upstream error messages |
upstream rate limit exceeded on a Claude apps gateway session | Upstream error messages |
all upstreams failed (N attempted) on a Claude apps gateway session | Upstream error messages |
Claude Code may not be enabled for your organization after a Claude apps gateway sign-in | Claude apps gateway troubleshooting |
Context exceeds the ...-token limit by ... tokens in /context output | Request errors |
Error during compaction: Conversation too long | Request errors |
Request too large | Request errors |
Request too large for the API's 32MB request limit | Request errors |
Image was too large | Request errors |
Unable to resize image | Request errors |
PDF too large / PDF is password protected | Request errors |
Extra inputs are not permitted | Request errors |
API Error: 400 ... tools.N.custom.input_schema: JSON schema is invalid / Property keys should match pattern | Request errors |
There's an issue with the selected model | Request errors |
Model ... is not a recognized model id | Request errors |
Model ... not found | Request errors |
Claude Opus is not available with the Claude Pro plan | Request errors |
Claude Code ... does not support this model; version ... or newer is required | Request errors |
Claude Code ... is older than the minimum version required by your organization's policy | Request errors |
Model ... is restricted by your organization's settings | Request errors |
Model switch ... blocked by a PreModelSwitch hook | Request errors |
couldn't save it as your default / couldn't confirm it was saved as your default | Request errors |
thinking.type.enabled is not supported for this model | Request errors |
Effort '<level>' isn't available with thinking turned off on this model | Request errors |
effort '<level>' is not supported when thinking is disabled | Request errors |
max_tokens must be greater than thinking.budget_tokens | Request errors |
API Error: 400 due to tool use concurrency issues | Request errors |
[Unsupported tool content removed] | Request errors |
server_tool_use.name: Input should be on every turn of a resumed session | Request errors |
<model> can't help with this. Start a new session to continue | Request errors |
Claude Code is unable to respond to this request, which appears to violate our Usage Policy | Request errors |
<model>'s safeguards flagged this message | Request errors |
<model> has safety measures that flagged this message for a cybersecurity topic | Request errors |
Installation was killed before it could finish (exit code 137) | Installation errors |
The connection dropped while downloading the update | Installation errors |
Download timed out: exceeded the total deadline | Installation errors |
--bg and --print conflict | Command-line errors |
Cloud sessions cannot be created from a --restricted session | Command-line errors |
Error: --json-schema is not a valid JSON Schema | Command-line errors |
Error: Invalid --agents configuration: | Command-line errors |
Error: Settings file exceeds the 2MiB limit | Command-line errors |
The current directory no longer exists (it was deleted or moved) / Can't read the current directory | Command-line errors |
couldn't be resolved to a real location, so its skills, commands, and agents weren't loaded | Command-line errors |
Error: Workspace not trusted when starting Remote Control | Command-line errors |
`<flag>` before `remote-control` is not carried over to the sessions Remote Control starts | Command-line errors |
`claude import` is not yet available in this build | Command-line errors |
Could not read Claude Code config | Command-line errors |
Could not import <server>: <reason> | Command-line errors |
Cannot add MCP server to scope: managed | Command-line errors |
is Anthropic-hosted and doesn't support local OAuth | Command-line errors |
Can't read .mcp.json: it isn't a regular file or is larger than 2097152 bytes | Command-line errors |
Server rejected the Authorization header minted by the configured headersHelper | Command-line errors |
Error: MCP tool <name> (passed via --permission-prompt-tool) not found | Command-line errors |
OAuth callback port <port> is already in use — another process may be holding it | Command-line errors |
Shell command failed for pattern "...", from /security-review or any skill that injects dynamic context | Command-line errors |
Shell command permission check failed for pattern "...", from a skill that injects dynamic context | Command-line errors |
Skill <name> requires bash (`shell: bash` in frontmatter) but Git Bash was not found | Command-line errors |
Input must be provided either through stdin or as a prompt argument when using --print | Command-line errors |
Error: Input contained only whitespace | Command-line errors |
Blank prompt — the message was only whitespace, so nothing was sent to the model. | Command-line errors |
Error: stream-json input carried over 256M characters with no newline | Command-line errors |
Unknown command: /<name>, with or without a Did you mean suggestion | Command-line errors |
Diff is too large for ultrareview / PR #<N> is too large for ultrareview | Command-line errors |
Could not find merge-base with <branch> | Command-line errors |
Your checkout has no branches (detached HEAD only) | Command-line errors |
Ultrareview clones <owner>/<repo> in the cloud with the GitHub account connected to your Claude account, and none is connected | Command-line errors |
Your connected GitHub account can't see <owner>/<repo> | Command-line errors |
The GitHub App preflight failed transiently (network or service hiccup) — retry in a moment to start from GitHub instead | Command-line errors |
Failed to resume the conversation | Command-line errors |