Why do I see Excel cannot open the file because the file format or file extension is not valid

I'm here to ensure you can open the Excel file seamlessly, Paul. Let me provide the troubleshooting steps to get past the error.

In addition to Deity Alpha's answer, ensure the file extension matches the file format. An Excel file should have an extension like .xlsx or .xls.

Aside from that, use the Excel built-in repair tool to fix corrupted files by following these steps:

1. In Excel, go to File and select Open.
2. Browse to the file location and select the file.
3. Click the arrow next to the Open button.
4. Select Open and Repair.

Next, export the report again. If you still get the same result, change group permissions for the file. Here's how:

1. Right-click on the file and select Properties.
2. Go to the Security tab and click Edit.
3. Add Everyone and give full control permissions.
4. Click Apply and OK.
   
   

For additional information about exporting reports and steps to view the full details of statements, click the following link: Export your reports to Excel from QuickBooks Online.

In case you'll have to import your contact fields, and customers' information, as well as tailor the data of your reports in the future, open each link below for detailed instructions:

• Customize reports in QuickBooks Online
• Which contact fields are imported from Excel?
• Export customer data to Excel
  
  

Feel free to visit the Community again if you have other QuickBooks-related concerns or additional questions about exporting or importing data via Excel. We're here to make sure everything is taken care of for you.