Azure Storage Explorer/ Azcopy Failed - Error Code 409

Michael Zamora 0 Reputation points
2023-08-03T14:15:23.7633333+00:00

I keep getting this error code resulting in corrupt copies. Any ideas?

Azure Storage Explorer
Azure Storage Explorer
An Azure tool that is used to manage cloud storage resources on Windows, macOS, and Linux.
240 questions
0 comments No comments
{count} votes

1 answer

Sort by: Most helpful
  1. Sumarigo-MSFT 44,906 Reputation points Microsoft Employee
    2023-08-03T14:50:14.25+00:00

    @Michael Zamora Can you please share the Screen shot of the error code? When exactly are you getting this error code?

    Which version of Azure Storage explorer or Azcopy are you using?

    Known temporary issues

    There's a service issue impacting AzCopy 10.11 and later versions that are using the PutBlobFromURL API to copy blobs smaller than the given block size (whose default size is eight mebibytes (MiB)). If the user has any firewall (VNet/IP/PL/SE Policy) on the source account, the PutBlobFromURL API might mistakenly return the message "409 Copy source blob has been modified". The workaround is to use AzCopy 10.10:

    Additional information: Based on the error code, Its a generic error and issue could be due to permissions to azure storage account( Blob )

    • Are getting this error for particular blob container? and can you please share the complete azcopy cmdlet what you using (while sharing the data, please delete the PI information)
    • Are you using SAS token or AAD for data transfer (If you are using SAS token please regenerate the token, sometime SAS token would be expired) ?

    Refer to this article how to upload files and directories to Blob storage by using the AzCopy v10 command-line utility.
    Example azcopy copy "<local-folder-path>" "https://<storage-account-name>.<blob or dfs>.core.windows.net/<container-name>" --recursive=true

    For testing purpose, can you please use Azure Storage explorer tool and let me know the status.

    Assign an Azure role for access to blob data

    Please refer to the suggestion mentioned in this SO thread, which gives lots of ideas and solution for your scenario.

    Please let us know if you have any further queries. I’m happy to assist you further.


    Please do not forget to "Accept the answer” and “up-vote” wherever the information provided helps you, this can be beneficial to other community members.