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lftp upload error Access failed: 551 Error on output file

  • May 22, 2025
  • 1 reply
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I am using lftp client to upload some large files ( ~60gb for each file).

However, after taking several hours of uploading, it returned the following error code:cd ok, cwd=/share
put: /media/Data/1.gz: Access failed: 551 /share/1.gz: Error on output file.

Looking at this documentation: https://support.box.com/hc/en-us/articles/360044194853-I-m-Having-Trouble-Using-FTP-with-Box  , I am certain there is no trailing space for the folder name. Uploading other smaller files by using the same command works just fine. 

 

    1 reply

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    Hopefully you've figured this out by now, but for future users, I've had similar issues due to the file size. Box has size limits depending on account type (listed here) and if you attempt to upload a file size larger than that then you'll run into these issues. 

    You may be able to use something like `split` and `cat` to split files into smaller sizes and upload, and later concatenate them on download.

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