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BugZero found this defect 1670 days ago.
When adding a worker instance to the Bahrain or Hong Kong regions, the following error occurs: AWS was not able to validate the provided access credentials.
Veeam Backup for AWS uses the Global STS endpoint.
To add a worker to the Bahrain or Hong Kong regions, do the following: Open the IAM Console. Go to Account Settings > Security Token Service (STS). Set the Global endpoint to Valid for all AWS regions. For more information about AWS Security Token Service, see this Amazon article.