I am trying to import some files with CSV on magento 2, when i click check data, it nevers loads. when i click f12 i get

Failed to load resource: the server responded with a status of 503 (Service Unavailable)

magento/admin_[admin]/admin/import/validate/key/[key]/?form_key=[form key]

2 Answers 2


First of all you should export the CSV format from magento 2 than you can changes in CSV and again upload this CSV in magento 2. I hope you understand.

  • Carefull, export configurable products with more than 1 variation failed! Mar 23, 2017 at 14:51

This is due to an improperly formatted CSV file. When saving out of excel ensure you are saving as "Windows Comma Separated (.csv)". This is especially important if working on a mac.

Also, if working on a mac ensure that the .csv file type is assigned. It will still open in mac excel without it but will not be recognized on the Magento import function.

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