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The response is not in a JSON format, Cannot read server response 404

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Posted on by Community Power Pla...

Hello, I'm having a flow that copies file attachments from a SP list item to another SP List. This flow works totally fine with moving word docs .doc, but has error with moving PowerPoint files; sometimes works fine with .MSG files from Outlook but sometimes cause error with this too.

This's error

This is my flow

What is causing this issue? Do you have any suggestions to fix it? Thanks much for your support.

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ShekarS 4 on at

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Re: The response is not in a JSON format, Cannot read server response 404

I am getting the JSON error while sending event to Azure Event Hub from Power Automate.

Attached is the screen shot on how the flow looks like at design time and what the error is shown as.

Screenshot 2023-0...

Screenshot 2023-0...
Community Power Pla... on at

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Re: The response is not in a JSON format, Cannot read server response 404

@v-litu-msft Thanks for your reply.
yes, this was the issue with URL..I found that I did custom URLs and some of them didn't work correctly.
So the flow was correct, just URL issue. Thanks
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v-litu-msft on at

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Re: The response is not in a JSON format, Cannot read server response 404

Hi @Anonymous,

Your Flow is correct, I reproduced your Flow on my side but not find the same issue, my attachment is a PowerPoint file named "Flow need to.pptx".

I guess the error is caused by the site address:

Best Regards,
Community Support Team _ Lin Tu
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