S3 AccessDenied: find the denying policy before adding permissions
Use the actual caller, bucket and operation to separate missing allows from explicit denies, endpoint restrictions and KMS access.
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Use the actual caller, bucket and operation to separate missing allows from explicit denies, endpoint restrictions and KMS access.
An attached role does not prove the SDK is using it. Inspect credential precedence and the instance profile without printing temporary credentials.
The same intended role can read an object from an approved diagnostic session, while a service running through an S3 VPC endpoint receives 403. The team has checked the role and bucket policy but has not reviewed the endpoint policy. How should the differing request paths be compared?