S3Express: Amazon S3 Command Line Utility

Amazon S3 command line utility for Windows. Copy, query, backup multiple files to S3 using the Windows command line.

S3Express FAQ and Knowledge Base

Main Page > Browse Categories > Release History > [2019] Version 1.5.10 (Jul 2019)

[2019] Version 1.5.10 (Jul 2019)


  • Added the new -accelerate option to the put command to support s3 accelerated transfers.

  • Switched S3Express to use AWS Signature Version 4 by default for all regions.


  • Fixed issue with wrong time-zone handling which could result in the error "400 - AuthorizationHeaderMalformed - The authorization header is malformed; Invalid credential date. Date is not the same as X-Amz-Date."

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