certificate verify failed: unable to get local issuer certificate

[gitissuepost]

Describe the bug

While executing aws ec2 describe-instances, it results to
SSL validation failed for https://ec2.eu-west-1.amazonaws.com/ [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)

aws sso login is successful and aws s3 ls works fine. However, aws ec2 and aws sts results to similar error. i haven't tried other commands yet as these basic commands are failing.

If I bypass ssl verification, it works fine but without no-verify-ssl flag, it fails.

Note: I had added the certificates to same bundle that was used for sso

Regression Issue

• Select this option if this issue appears to be a regression.

Expected Behavior

command should return ec2 details even with out no-verify-ssl flag

Current Behavior

SSL validation failed for https://ec2.eu-west-1.amazonaws.com/ [SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: unable to get local issuer certificate (_ssl.c:1000)

Reproduction Steps

set up env vars for HTTP_PROXY, HTTPS_PROXY, AWS_CA_BUNDLE
aws configure sso or aws sso login - Success
aws s3 ls - Success
aws ec2 describe-instances - Fails
aws sts get-caller-identity - Fails

Possible Solution

No response

Additional Information/Context

https://gist.github.com/gitissuepost/56ea901617a6168b6619d12f676a049e

CLI version used

2.22.25

Environment details (OS name and version, etc.)

Windows 10 22H2 Build#19045