The following error occurs when creating a folder in the S3-Compatible Object Storage bucket: "Unable to create folder (name: <folder_name>)".
Certain S3-compatible API do not support an unsigned payload used by Veeam Backup for Microsoft Office 365 as the x-amz-content-sha256 authorization header. Applicable to builds: 188.8.131.525, 184.108.40.2063.
Upgrade the Veeam Backup for Microsoft Office 365 server to version 4.0b (build 220.127.116.116) or contact technical support to get a patch for version 4.0a (build 18.104.22.1683).
Please be aware that we’re making changes which will restrict access to product updates for users without an active contract.