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Error in the Exported PowerBI file (corrupted file)

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Posted on by felipecanhetti

Hello dear community!

I created a flow to "Export a File For PowerBI Report" and then e-mail the file. An Error occurs when opening the Exported file generated by PowerAutomate saying the file is corrupted and cannot be opened. I tried to select PDF and PPTX file from the PowerBI extraction and I also guaranteed to write the extension in the file name I send from the email.

Does anyone know how to solve this problem?

My flow:

My configurations:

Thanks in advance for all the good souls active in

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lbendlin 8,655 Super User 2026 Season 1 on at

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Are you trying to Base64 encode the file twice?

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felipecanhetti 4 on at

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No, this "Base64" appeared after I saved the flow. Before saving, the text was like this:
The codes that appear are:
* BI Export:
"
{
"type": "OpenApiConnection",
"inputs": {
"parameters": {
"groupid": "myworkspace",
"reportid": "70417e0a-1bf8-4488-b0cd-16f7ad6617f5",
"ExportPayloadPowerBIReport/format": "PDF"
},
"host": {
"apiId": "/providers/Microsoft.PowerApps/apis/shared_powerbi",
"connection": "shared_powerbi",
"operationId": "InitiateExportToFileForPbiReports"
}
},
"runAfter": {}
} "

* Code the Email part:
"
{
"type": "OpenApiConnection",
"inputs": {
"parameters": {
"emailMessage/To": "felipe.oliveirac@kof.com.mx",
"emailMessage/Subject": "TEste PBI",
"emailMessage/Body": "<p>teste</p>",
"emailMessage/Attachments": [
{
"Name": "Teste BI.PDF",
"ContentBytes": "@{base64(body('Exportação_para_Arquivo_para_Relatórios_do_Power_BI'))}"
}
],
"emailMessage/Importance": "Normal"
},
"host": {
"apiId": "/providers/Microsoft.PowerApps/apis/shared_office365",
"connection": "shared_office365",
"operationId": "SendEmailV2"
}
},
"runAfter": {
"Exportação_para_Arquivo_para_Relatórios_do_Power_BI": [
"Succeeded"
]
}
}"

It seems like its only Base64 encoding once

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lbendlin 8,655 Super User 2026 Season 1 on at

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How large is the attachment? Base64 strings have a low size limit.

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felipecanhetti 4 on at

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It should be a small attachment since it is only a one-page report from PowerBI.
Where can I see the size of the file generated by the "Export from PowerBI" automation? (I tried downloading it, but it was saved as a JSON and I could not open that)

The error I receive from Adobe Reader is:

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LukasG 8 on at

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I have exactly the same issue and error message (also tried PPT but also says the file is corrupt) - would love if someone had a solution for this!

The exports work fine when I do them directly from the PowerBI report...

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XYZUser 30 on at

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Hi,
This seems to be a bug in power automate new designer. I was also facing this issue earlier.
If you go back to the old designer (by disabling the new designer toggle present in top-right), then it'll surely work fine.

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LukasG 8 on at

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Thank you very much @XYZUser that was the right solution 😄

Although it was not enough to just hit the toggle, I also had to reselect the output from the PowerBI step in my email step for it to work. But now it works!

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XYZUser 30 on at

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Yess, Forgot to mention that you need to reselect the power bi content file again in your email step 🙂

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tech2188_ATSG 3 on at

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Thank you all. Had the same issue and this fixed it. Reselecting was a critical part of the equation.

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