2. Select Manage Workbook > Recover Unsaved Workbook . Excel file recovery options 3. From the list of files displayed, open the inaccessible file and save it. Solution 7: Open MS Excel in Safe Mode ...

With the Excel extension is not valid error, try starting the app in Safe Mode, repair the workbook or open the file in another program.

To fix the Excel file format does not match extension error, trying opening the spreadsheet with the Open and Repair option or changing its file extension.

Every now and then, when I try opening an Excel file, I get a message saying that "Excel cannot open the file 'file.xlsx' because the file format or the file extension is not valid. Verify that the ...

When the file extension doesn’t match the format, changing it manually helps Excel read the file correctly. Adjusting the extension (e.g., from .txt to .xlsx) aligns the file with Excel’s expectations ...

How to Recover a Microsoft Excel File That Is Not in a Recognizable Format. If Microsoft Excel fails to recognize a file in the XLSX or XLS format, the data contained in the file could be corrupted.

Some users have been getting the "Data source reference is not valid" when trying to create a pivot table from a range in Excel. This particular error is ...

If you are getting the Data source reference is not valid while trying to create a pivot table in Microsoft Excel, see this post for the fix.

The following reasons may play a part in triggering this FileType error: The file format could indeed be the cause for FileType selected not being supported by Teams, Excel, etc.

Say you have a folder with two files: one is an Excel file called Date.xlsx and one is a CSV file called Date.csv. Here’s the M code for a Power Query query that connects to the Excel file and reads ...