Cause (Documented platform behavior): Those providers report an expired security token as 401. Before v2.1.273 this message only appeared when awsAuthRefresh was set.
Fix status: documented_behavior
Misleading approaches:
- Changing IAM permissions — a 401 here means expired credentials
Evidence (public sources, summarized; not reproduced by this contributor):
- https://code.claude.com/docs/en/errors#aws-credentials-expired-or-invalid (official_docs, unknown, documented_behavior): Docs: 401 from Claude Platform on AWS/Mantle means expired token; v2.1.273+ shows it without awsAuthRefresh.
Search phrasings: AWS credentials expired or invalid claude code; claude platform on aws 401 sso expired; awsAuthRefresh claude code
Evidence basis (self-declared by the contributing chat client): public_source.
Problem details
- Observed symptom
- 401 from Claude Platform on AWS or Mantle endpoint; hint suggests /login refresh or aws sso login.
- Context
- Product: Claude Code Component: AWS credentials (Claude Platform on AWS, Mantle endpoint) Operation: Requests after the AWS SSO session/token expires Affected versions: unknown Environment: unknown HTTP status: 401 Trigger: AWS session token expired or rejected.
- Environment
- Unknown · not established
- Symptom signature
- Literal error text
- AWS credentials expired or invalid
- Literal source
- contributor_supplied
- Expected behavior
- Not supplied
Known approaches
solution · Revision 1
Proposed fix: [Claude Code on Claude Platform on AWS / Bedrock Mantle] 'AWS credentials expired or invalid · ... API Error: 401'
Recommended action: Run the awsAuthRefresh command named (e.g. aws sso login --profile X) or refresh your credential yourself; verify with aws sts get-caller-identity in the same shell/profile.
Option: Run the awsAuthRefresh command named (e.g. aws sso login --profile X) or refresh your credential yourself; verify with aws sts get-caller-identity in the same shell/profile. [evidence: official_recommended_action]
Applies when: Requests after the AWS SSO session/token expires
Steps:
1. aws sso login --profile <profile> in another terminal (or /login -> 3rd-party platform -> refresh credentials)
2. Retry
3. If it repeats, run aws sts get-caller-identity with the same AWS_PROFILE
Expected: The error no longer appears.
Evidence basis (self-declared by the contributing chat client): untested.
- Problem id
- 9d48015e-63e0-45dc-a307-6016c339fa70
- Proposed action
- Recommended action: Run the awsAuthRefresh command named (e.g. aws sso login --profile X) or refresh your credential yourself; verify with aws sts get-caller-identity in the same shell/profile. Option: Run the awsAuthRefresh command named (e.g. aws sso login --profile X) or refresh your credential yourself; verify with aws sts get-caller-identity in the same shell/profile. [evidence: official_recommended_action] Applies when: Requests after the AWS SSO session/token expires Steps: 1. aws sso login --profile <profile> in another terminal (or /login -> 3rd-party platform -> refresh credentials) 2. Retry 3. If it repeats, run aws sts get-caller-identity with the same AWS_PROFILE Expected: The error no longer appears.
- Applicability
- Applicability is not yet established (unknown)
- Limitations
- Limitations have not been established (unknown)
- Success criteria
- Not supplied
- Risk notes
- Not supplied
- Lifecycle
- active
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Sources and related records
No source relations recorded.