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chrisingham
Helper I
Helper I

Issue with Excel File. This workbook couldn't be opened because the file format may not be matching with the file extension

Im having some issues creating a flow to read excel data. For some reason, Flow / OneDrive is saying that the workbook file format doesnt match the extension. 

 

I have a single tab excel file, the flow triggers when an email is received, it saves the file to Onedrive, then uses Excel Online (Business) to get rows in the table. I triggered the flow from an email I sent in and it worked fine in 15 seconds, but then after editing the flow and re-running it using the same trigger the flow runs for 10 minutes and times out saying 

"This workbook couldn't be opened because the file format may not be matching with the file extension"

This makes no sense as sometimes it accepts the file and other times it gives this error. 

 

It is a normal .xlsx file. I rebuilt the file and tried again, same issue. I've not had this kind of inconsistent issue before with Power Automate. What is causing this? 

 

 

16 REPLIES 16
chrisingham
Helper I
Helper I

My run history is a mix of red and green, failed and succeeded, using exactly the same email. Sometimes it works, sometimes it doesnt work, with no changes to the flow. Cant really use this if its so unreliable. 

KojoShaddy
Advocate I
Advocate I

Hello @chrisingham ,

 

I solved a similar issue here. Kindly share screenshot of your flow let me assist you with it.

Hi Kojo, 

 

I ran into the same problem creating a flow to upload Excel file from Powerapps to SharePoint. https://www.youtube.com/watch?v=45qSaxyS9Rg 

I've followed the exact steps but the excel file that I have uploaded cannot be opened in SharePoint site. The error is the same with @chrisingham .

problem1.PNG

The excel file could be opened if I drag and drop it inside SharePoint. However, when it is uploaded through PowerApps, I could not open it in SharePoint. 

 

I hope you could help me with my case. Thank you in advance. 

 

Best regards,

exploring Explorer G

Hello @exploringG 

Sure, this issue can be fixed when you use the attachment field from SharePoint list in power apps to do the uploads.

Reza Dorrani explained here using the attachment field to upload any file from Power Apps.
Do not hesitate to alert me if you encounter any challenges in the process.

 


::Please do not forget to give it a Thumbs Up if you like the solution.

Hi @KojoShaddy , 

 

I have followed the video you suggested here and successfully uploaded excel files into my library. As a matter of fact, it was the first part of the video. Upload excel file using 'Media ->add Picture'.   Then I combined it with another video to import excel file to SharePoint list using PowerApps. It was not easy since I'm still a newbie but  I did it. 

Thank you very much for your help! 

 

Best,

excited exploring ExplorerG

KojoShaddy
Advocate I
Advocate I

Wow, this is awesome, @exploringG 
Well done.

Jamesharper
New Member

Check if below steps works for you.

- Press Windows+R keys, type excel.exe /safe, and click "OK". Loading Excel without templates and add-ins allows you to see if the program works as it should or if it is corrupted.

- If Excel opens normally, check for any add-ins that are causing problems in Excel. Disable the add-ins and click on the "OK" button. Then, restart Excel to check if the problem is fixed. If not, move on to the fixes below.

 

Regards,
James

Hello @Jamesharper 

I think the issues has been fixed now following the video I shared. Actually this issue is due to the tool used in power apps in uploading the file. The file gets corrupted. 

Nina5
Regular Visitor

Hi,

 

Have you managed to solve this problem? Below solution is for power apps and I need to resolve it for power automate

zbegumdost
Helper V
Helper V

I am having the same problem while I am creating a file from outlook. Do you know how can I fix it? @KojoShaddy @Jamesharper 

 

Anonymous
Not applicable

I am also facing the same issue, when I create a excel file from outlook. I am getting the following error 
"This workbook couldn't be opened because the file format may not be matching with the file extension:"

Any solutions?

Facing the same issue while storing email attachments to SharePoint using Power Automate Flow. Have you found the solution? 
Kindly help. 

I am ussing the get attachments field and it still will not let me upload with a new name, if I keep the name the same it uploads fine. But its a generic name i need fixed

I'm working on the same use case and facing exactly the same issue. Have you found a solution for this?

cwbrennan
Frequent Visitor

Same issue as above. 

 

File manually saved to onedrive works, but automate is struggling.

JanV
Advocate I
Advocate I

I managed to solve this by transforming the attachment content using this function:

base64ToBinary()
 
JanV_0-1712323124098.png

 

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