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I'm trying to configure s3cmd to backup some directories on my server to my AWS S3 bucket. My problem is that when I do the sync command: s3cmd sync -r -p --no-delete-removed /path/to/dir s3://bucketname/dir/ I get the following error:

ERROR: S3 error: 400 (InvalidRequest): The authorization mechanism you have provided is not supported. Please use AWS4-HMAC-SHA256.

I am using s3cmd version 1.5.0-rc1. On my other server I am using the same version of s3cmd and use the same command and everything is working fine.

How can I fix this problem?

Bart Bergmans
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1 Answers1

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Sorry, my fault. Updated the version to s3cmd 1.6.1 and everything is working fine now!

You can download the latest version at https://sourceforge.net/projects/s3tools/files/s3cmd/

Bart Bergmans
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