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When I am trying insert data using .csv file from Data Import wizard in salesforce, I am getting this error "The MIME type of the selected file is not allowed". My csv file contains a single column with Account names.

I tried to upload the another file still I got the same error, I used "" and , for field separator and deliminator.

Any help in resolving this error will be appreciated.

Thanks in advance.

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  • Can you try this? Copy and paste the whole list of account names in Editplus, open a fresh excel sheet, copy back the list from editplus and paste it in the excel sheet. Then save the sheet as CSV.
    – Shailesh Patil
    Jan 7, 2015 at 8:30
  • Thanks, That worked! can you please tell me what was the issue with the file?
    – Praveen Biyani
    Jan 7, 2015 at 11:22
  • Sometimes some hidden characters get copied/added to the file restricting file being the usable format. I am adding this as an answer. Please accept it as others could also refer it as the answer.
    – Shailesh Patil
    Jan 7, 2015 at 11:27

3 Answers 3

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Can you try this? Copy and paste the whole list of account names in Editplus, open a fresh excel sheet, copy back the list from editplus and paste it in the excel sheet. Then save the sheet as CSV.

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I ran into this same example when working through a tutorial on Trailhead (import contacts_to_import.csv)

Being a Mac user I thought that this might be the issue, but it proved much simpler: switch from Firefox to Chrome! Problem solved.

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Firefox (I tried 41.x) on Windows/Mac shows the MIME-Type error - seems to be an Firefox bug.

I switched to Chrome and it works!

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