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SFTP connector and special characters in csv file



I have encountered an issue when files are copied with the SFTP connector from a sharepoint site to a SFTP server with special characters in csv files. It seems this has started suddenly from somewhere around end of March 2019. At least one special character it changes is á to ï¿½ instead.

This same flow also moves the file from one place to another after the SFTP connector on the sharepoint site and the file is ok when that is done.


Here is the flow:


2019-05-06 14_57_01-Edit your flow _ Microsoft Flow.png


Thanks in advance for any help!

Post Prodigy
Post Prodigy

Hi @Anonymous,


Depending on what you type, it should be French, if your expected character is á, please type á instead.


This link is UTF-8 Encoding Debugging Chart as below:


If you still have problem, I advise you to do nothing but wait for this file to be cleared or to resubmit request to restart the flow.


I hope it can help you.


Best Regards,

Community Support Team _ Lin Tu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Not applicable

Hi @v-lin-msft ,


I can unfortunately not change what is coming out of the source system, it comes in the csv file as e.g. á or ø.


Why is the SFTP connector changing the character when it runs?

Hi @Anonymous,


Perhaps utf-8 does not support the conversion of French vowels in CSV file format. You may could to try other methods, such as changing connetor in other file format to store your data.


Best Regards,

Community Support Team _ Lin Tu

If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.

Regular Visitor

Same problem here. The SFTP connector seems to be misinterpreting the encoding of the CSV which should be UTF-8 in this case. Because of the wrong encoding being applied by the connector, the file then loses special characters such as ø. Works fine if we force the encoding in the JSON to UTF-8, but then the web interface in Power Automate isn't happy.


To avoid losing special characters, it would be excellent if the SFTP connector in Power Automate could allow users to specify which character set should be used for the CSV.


There is no Byte Order Mark in the CSV. We have tried including a BOM with the expression concat(decodeUriComponent('%EF%BB%BF') however the issue is with the SFTP SSH connector and its 'Get' actions. Viewing the details of the flow run, when opening the input results for the CSV file from the SFTP connection it has already replaced characters such as ø with �. The decode expression just changes the � into �

Can you provide your CSV file?

Regular Visitor

I made a sample file for testing purposes (actual file contains personal details) but csv is not a supported file type for me to attach here. Only  jpg, gif, png, pdf, zip, doc, docx, ppt, ics, xlsx, xlsm, msapp, pbix, pptx are supported. How would you like me to get the sample file to you?

Just zip it.

Regular Visitor

Oh duh thanks. Here's the zipped sample file for testing purposes generated directly by the same source system.


The CSV is in an FTP and we need to use the SFTP connector to get the file without it losing the special characters.

Your CSV is encoded in an outdated way (probably something like ISO-8859-1).

UTF-8 should always be the first choice!


However, if you get the file content and move it around with FTP actions, the content doesn't change.

The only issue is, that Powerautomate's web view can't handle this.

The web page has character encoding UTF-8 and in there a special character in ISO-8859-1 is unknown.

Therfore these special characters are replaced with utf-8's unknown character symbol.

But only in the web view, not in the data!


In my test run I

  • grabbed the file content (from Sharepoint),
  • used the decodeBase64 function in a Compose action (which results in unknown characters)
  • and created a file on the FTP server from the file content.



As you can see in the "Get file content 2 action", the encoded content is still the same



and still contains the special characters (encoded in ISO-8859-1)



Since � ISO-8859-1 is equal to � in UTF-8, I wonder where else you get this mixture of UTF-8 and ISO-8859-1 encoding in your flow. But in my opinion it is not because of the FTP actions.

Regular Visitor

I was just struggling with a similar problem and by trying to import the csv file into excel I discovered that it was using Windows-1252 encoding.


The solution ended up being a compose step with this expression

binary(setProperty(triggerOutputs()?['body'], '$content-type', 'octet/stream;charset=windows-1252'))


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