Attachment uploaded on Microsoft form cannot be sent in email

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Posted on by IF-06091959-0

I'm trying to attach a document uploaded on a Form to an email and send it to another email from the form. I can't get it to work, even if I switch from the old and new designer. Flow looks like this:

As you can see, no dynamic content pops up.

If I switch to detail inputs, the attachment name and content does not pop up (the question where you upload the document is circled):

I've tried to upload another way, using this tutorial, where I save the file in a folder and then attach it to the email:

(22) Microsoft Forms Responses & Attachments to Automated Email Using Power Automate - YouTube

Flow looks like this:

The document attaches, but I get this error when I try to open it:

Has anyone else figured out how to do this?

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Business Process Flows

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Ellis Karim 11,067 Super User 2025 Season 1 on at

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Attachment uploaded on Microsoft form cannot be sent in email

I just noticed the following. Please try removing the quote marks from the ContenetBytes and re-test the flow:

Ellis

Ellis Karim's Blog – IT doesn't have to be complicated!
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Ellis Karim 11,067 Super User 2025 Season 1 on at

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Attachment uploaded on Microsoft form cannot be sent in email

Sometimes Power Automate can change the expressions to the equivalent dynamic content, which is not a problem. As long as the expressions you have entered are correct as shown below:

Sometimes attachments just won't open.

If this is the case, you may need to enter the following alternative expressions for the “contentBytes” property:

{ "name": items('Apply_to_each')?['name'], "contentBytes": { "$content-type": body('Get_file_content_using_path')?['$content-type'], "$content": body('Get_file_content_using_path')?['$content'] } }

See the following related posts for more information:

Microsoft Group (Shared) Forms – Emailing the Form’s File Attachments – Ellis Karim's Blog - this post shows a working example of a Microsoft Group based form.

{FIX} Corrupt or Bad File When Trying to Open a File That Was Saved to SharePoint Using Power Automate – Ellis Karim's Blog

Item() and Items(Apply to each) Functions Explained with Examples – Ellis Karim's Blog

If you are still having problems, we'll need to dig deeper and I will need to see more of the flow and view some runtime outputs. For example:

Ellis

Ellis Karim's Blog – IT doesn't have to be complicated!
IF-06091959-0 27 on at

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Attachment uploaded on Microsoft form cannot be sent in email

Made that correction and am still receiving the error. Also, every time I run it changes the expression from item()?['name'] to the dynamic content below:
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Ellis Karim 11,067 Super User 2025 Season 1 on at

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Attachment uploaded on Microsoft form cannot be sent in email

Please check the Append to Array variable action, as shown below:

For more details, see: Microsoft Group (Shared) Forms – Emailing the Form’s File Attachments – Ellis Karim's Blog

Ellis

Ellis Karim's Blog – IT doesn't have to be complicated!