Amazon S3 AWS4-HMAC-SHA256

Using Amazon S3 as storage option you can not use a bucket hosted in eu-central-1 (Frankfurt) due to newer authorize machnism:

The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.

Other server regions supporting older signature versions but eu-central-1 requires signature version v4:

Any new region added after January 2014 supports only AWS Signature v4:

I have not looked up the source code for AWS function but i think you are using still version 3, so updating to version 4 is needed in order to work with buckets hosted in regions added after january 2014.

Hi mdxdave,

Thanks for the report. I have created a ticket here: