Outlook error message

[Anonymous]

Hello everyone, I have this flow that sends a certain PDF file in case it passes through the approved condition, the flow runs just fine, the problem is that when the file is received in the outlook inbox, the customers are allowed to open the file, but as soon as you close the file, it displays an error message regarding outlook connection,

the error message doesnt show up when you send the file from one email to another without using the flow.

There are two users in charge of receiving the mentioned file, and both receive the same error.

users are in the same LAN, cache has been deleted, users tried in different PC and in private browsers and the error remains

additionally, when you click on update window,  it gets back to the inbox, but when you open the PDF file once again, it displays the error message 

[Brad_Groux · Accepted solution]

This is an Office 365 Email Security setting and is not Power Automate related. Please review Office 365 users can't open or view attachments in Outlook Web App and its solution for mote details.

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Change the Outlook Web App mailbox policy to include and exclude the file types that you want. For more information about how to do this, see the “Add or remove file types from file access lists” section of the following Microsoft website:

The following is an example of the Windows PowerShell commands to remove the .xml file type from the BlockedFileTypes and BlockedMimeTypes lists and add it to the AllowedFileTypes and AllowedMimeTypes lists:

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Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -BlockedFileTypes @{Remove = ".xml"}
Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -AllowedFileTypes @{Add = ".xml"}
Get-OwaMailboxPolicy | Set-OwaMailboxPolicy -BlockedMimeTypes @{Remove = "text/xml", "application/xml”}
Get-OwaMailboxPolicy | Set-OwaMailboxPolicy –AllowedMimeTypes @{Add = "text/xml", "application/xml”}

👨🏻‍💻 If this reply answers your question or solves your issue, please ACCEPT AS SOLUTION ☑️. If you find this reply helpful, please consider giving it a LIKE 👍.

[v-alzhan-msft]

Hi @Anonymous ,

Please take a try with @Brad_Groux 's solution.

Best regards,
Alice       
 
Community Support Team _ Alice Zhang
If this post helps, then please consider Accept it as the solution to help the other members find it more quickly.