Create File action not saving a PDF but a weird file name

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Posted on by J-Rod

I am trying to run an automated cloud flow that monitors an email that has attachments and the subject or body matches key words. When there is a match I want the flow to create a pdf file in a specific sharepoint folder. The actions are executing but the file being saved is not the pdf. I am trying to make the flow rename the pdf.

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Building flows

Power Automate Desktop

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BCBuizer 22,675 Super User 2026 Season 1 on at

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Hi @JS-14051613-0,

Can you please share what you have set for the FileName parameter in the Create File action? I suspect you missed to include the file extension in there.

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J-Rod 6 on at

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hi @BCBuizer,

The file name currently uses this expression

concat('E&O app _',triggerOutputs()?['body/receivedDateTime'])

I bet that I did.

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David_MA 14,546 Super User 2026 Season 1 on at

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Part of the "weird" filename, in addition to the concat() not including the file extension, is that you are using the created date raw as part of the filename. You could use the formatDateTime() expression to format it in a more user-friendly manner. Otherwise, it will be written in the ISO8601 format, which is what you are getting now. Here is information on using formatDateTime() Customize or format date and time values in a flow - Power Automate | Microsoft Learn

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J-Rod 6 on at

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@David_MA Thanks to that response I was able to get the file to show up as a pdf and with a better name! Thank you, but a different problem popped up.

I only ran a test, but when I went to open the content of the file this is what I got

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